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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.2515.3 Linux kernel vulnerabilities 29 August 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Linux kernel Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Root Compromise -- Existing Account Access Privileged Data -- Existing Account Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-1000204 CVE-2018-1000200 CVE-2018-13406 CVE-2018-13405 CVE-2018-13094 CVE-2018-12904 CVE-2018-12233 CVE-2018-12232 CVE-2018-11506 CVE-2018-11412 CVE-2018-10940 CVE-2018-10882 CVE-2018-10881 CVE-2018-10879 CVE-2018-10878 CVE-2018-10877 CVE-2018-10876 CVE-2018-10840 CVE-2018-10675 CVE-2018-10323 CVE-2018-10124 CVE-2018-10087 CVE-2018-10021 CVE-2018-9415 CVE-2018-5814 CVE-2018-1120 CVE-2018-1108 CVE-2018-1093 CVE-2018-1092 CVE-2017-18270 CVE-2017-18255 CVE-2017-17558 CVE-2017-16914 CVE-2017-16913 CVE-2017-16912 CVE-2017-16911 CVE-2017-16650 CVE-2017-16645 CVE-2017-16644 CVE-2017-16643 CVE-2017-16538 CVE-2017-16537 CVE-2017-16536 CVE-2017-16535 CVE-2017-16533 CVE-2017-16532 CVE-2017-16531 CVE-2017-16529 CVE-2017-16527 CVE-2017-16526 CVE-2017-15649 CVE-2017-14991 CVE-2017-13168 CVE-2017-11473 CVE-2017-11472 CVE-2017-9985 CVE-2017-9984 CVE-2017-8831 CVE-2017-7645 CVE-2017-7518 CVE-2017-6348 CVE-2017-6345 CVE-2017-5897 CVE-2017-5549 CVE-2017-2671 CVE-2017-2584 CVE-2017-2583 CVE-2016-10208 Reference: ESB-2018.2396 ESB-2018.2312 ESB-2018.2299 ESB-2018.1945 ESB-2018.1921 ESB-2018.1797 Original Bulletin: http://www.ubuntu.com/usn/usn-3752-1 http://www.ubuntu.com/usn/usn-3752-2 http://www.ubuntu.com/usn/usn-3752-3 http://www.ubuntu.com/usn/usn-3753-1 http://www.ubuntu.com/usn/usn-3753-2 http://www.ubuntu.com/usn/usn-3754-1 Comment: This bulletin contains six (6) Ubuntu security advisories. Revision History: August 29 2018: Added USN-3752-3 August 24 2018: Added USN-3753-2 August 24 2018: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3752-1 August 24, 2018 linux, linux-aws, linux-gcp, linux-kvm, linux-raspi2 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 18.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - - linux: Linux kernel - - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems - - linux-kvm: Linux kernel for cloud environments - - linux-raspi2: Linux kernel for Raspberry Pi 2 Details: It was discovered that, when attempting to handle an out-of-memory situation, a null pointer dereference could be triggered in the Linux kernel in some circumstances. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-1000200) Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly validate meta-data information. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10323) Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly validate xattr information. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10840) Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly keep meta-data information consistent in some situations. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10881) Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations. An attacker could use this to specially craft an ext4 filesystem that caused a denial of service (system crash) when mounted. (CVE-2018-1093) Jann Horn discovered that the Linux kernel's implementation of random seed data reported that it was in a ready state before it had gathered sufficient entropy. An attacker could use this to expose sensitive information. (CVE-2018-1108) It was discovered that the procfs filesystem did not properly handle processes mapping some memory elements onto files. A local attacker could use this to block utilities that examine the procfs filesystem to report operating system state, such as ps(1). (CVE-2018-1120) Jann Horn discovered that the ext4 filesystem implementation in the Linux kernel did not properly keep xattr information consistent in some situations. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-11412) Piotr Gabriel Kosinski and Daniel Shapira discovered a stack-based buffer overflow in the CDROM driver implementation of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-11506) Shankara Pailoor discovered that a race condition existed in the socket handling code in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-12232) Shankara Pailoor discovered that the JFS filesystem implementation in the Linux kernel contained a buffer overflow when handling extended attributes. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-12233) Felix Wilhelm discovered that the KVM implementation in the Linux kernel did not properly perform permission checks in some situations when nested virtualization is used. An attacker in a guest VM could possibly use this to escape into an outer VM or the host OS. (CVE-2018-12904) Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly handle an error condition with a corrupted xfs image. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash). (CVE-2018-13094) It was discovered that the Linux kernel did not properly handle setgid file creation when performed by a non-member of the group. A local attacker could use this to gain elevated privileges. (CVE-2018-13405) Silvio Cesare discovered that the generic VESA frame buffer driver in the Linux kernel contained an integer overflow. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-13406) Jakub Jirasek discovered that multiple use-after-free errors existed in the USB/IP implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-5814) It was discovered that a race condition existed in the ARM Advanced Microcontroller Bus Architecture (AMBA) driver in the Linux kernel that could result in a double free. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-9415) It was discovered that an information leak existed in the generic SCSI driver in the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-1000204) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-4.15.0-1018-gcp 4.15.0-1018.19 linux-image-4.15.0-1020-aws 4.15.0-1020.20 linux-image-4.15.0-1020-kvm 4.15.0-1020.20 linux-image-4.15.0-1021-raspi2 4.15.0-1021.23 linux-image-4.15.0-33-generic 4.15.0-33.36 linux-image-4.15.0-33-generic-lpae 4.15.0-33.36 linux-image-4.15.0-33-lowlatency 4.15.0-33.36 linux-image-4.15.0-33-snapdragon 4.15.0-33.36 linux-image-aws 4.15.0.1020.20 linux-image-gcp 4.15.0.1018.20 linux-image-generic 4.15.0.33.35 linux-image-generic-lpae 4.15.0.33.35 linux-image-gke 4.15.0.1018.20 linux-image-kvm 4.15.0.1020.20 linux-image-lowlatency 4.15.0.33.35 linux-image-raspi2 4.15.0.1021.19 linux-image-snapdragon 4.15.0.33.35 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://usn.ubuntu.com/usn/usn-3752-1 CVE-2018-1000200, CVE-2018-1000204, CVE-2018-10323, CVE-2018-10840, CVE-2018-10881, CVE-2018-1093, CVE-2018-1108, CVE-2018-1120, CVE-2018-11412, CVE-2018-11506, CVE-2018-12232, CVE-2018-12233, CVE-2018-12904, CVE-2018-13094, CVE-2018-13405, CVE-2018-13406, CVE-2018-5814, CVE-2018-9415 Package Information: https://launchpad.net/ubuntu/+source/linux/4.15.0-33.36 https://launchpad.net/ubuntu/+source/linux-aws/4.15.0-1020.20 https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1018.19 https://launchpad.net/ubuntu/+source/linux-kvm/4.15.0-1020.20 https://launchpad.net/ubuntu/+source/linux-raspi2/4.15.0-1021.23 ========================================================================== Ubuntu Security Notice USN-3752-2 August 24, 2018 linux-hwe vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 16.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - - linux-hwe: Linux hardware enablement (HWE) kernel Details: USN-3752-1 fixed vulnerabilities in the Linux kernel for Ubuntu 18.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 18.04 LTS for Ubuntu 16.04 LTS. It was discovered that, when attempting to handle an out-of-memory situation, a null pointer dereference could be triggered in the Linux kernel in some circumstances. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-1000200) Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly validate meta-data information. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10323) Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly validate xattr information. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10840) Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly keep meta-data information consistent in some situations. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10881) Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations. An attacker could use this to specially craft an ext4 filesystem that caused a denial of service (system crash) when mounted. (CVE-2018-1093) Jann Horn discovered that the Linux kernel's implementation of random seed data reported that it was in a ready state before it had gathered sufficient entropy. An attacker could use this to expose sensitive information. (CVE-2018-1108) It was discovered that the procfs filesystem did not properly handle processes mapping some memory elements onto files. A local attacker could use this to block utilities that examine the procfs filesystem to report operating system state, such as ps(1). (CVE-2018-1120) Jann Horn discovered that the ext4 filesystem implementation in the Linux kernel did not properly keep xattr information consistent in some situations. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-11412) Piotr Gabriel Kosinski and Daniel Shapira discovered a stack-based buffer overflow in the CDROM driver implementation of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-11506) Shankara Pailoor discovered that a race condition existed in the socket handling code in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-12232) Shankara Pailoor discovered that the JFS filesystem implementation in the Linux kernel contained a buffer overflow when handling extended attributes. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-12233) Felix Wilhelm discovered that the KVM implementation in the Linux kernel did not properly perform permission checks in some situations when nested virtualization is used. An attacker in a guest VM could possibly use this to escape into an outer VM or the host OS. (CVE-2018-12904) Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly handle an error condition with a corrupted xfs image. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash). (CVE-2018-13094) It was discovered that the Linux kernel did not properly handle setgid file creation when performed by a non-member of the group. A local attacker could use this to gain elevated privileges. (CVE-2018-13405) Silvio Cesare discovered that the generic VESA frame buffer driver in the Linux kernel contained an integer overflow. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-13406) Jakub Jirasek discovered that multiple use-after-free errors existed in the USB/IP implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-5814) It was discovered that a race condition existed in the ARM Advanced Microcontroller Bus Architecture (AMBA) driver in the Linux kernel that could result in a double free. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-9415) It was discovered that an information leak existed in the generic SCSI driver in the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-1000204) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: linux-image-4.15.0-33-generic 4.15.0-33.36~16.04.1 linux-image-4.15.0-33-generic-lpae 4.15.0-33.36~16.04.1 linux-image-4.15.0-33-lowlatency 4.15.0-33.36~16.04.1 linux-image-generic-hwe-16.04 4.15.0.33.55 linux-image-generic-lpae-hwe-16.04 4.15.0.33.55 linux-image-lowlatency-hwe-16.04 4.15.0.33.55 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://usn.ubuntu.com/usn/usn-3752-2 https://usn.ubuntu.com/usn/usn-3752-1 CVE-2018-1000200, CVE-2018-1000204, CVE-2018-10323, CVE-2018-10840, CVE-2018-10881, CVE-2018-1093, CVE-2018-1108, CVE-2018-1120, CVE-2018-11412, CVE-2018-11506, CVE-2018-12232, CVE-2018-12233, CVE-2018-12904, CVE-2018-13094, CVE-2018-13405, CVE-2018-13406, CVE-2018-5814, CVE-2018-9415 Package Information: https://launchpad.net/ubuntu/+source/linux-hwe/4.15.0-33.36~16.04.1 ========================================================================== Ubuntu Security Notice USN-3752-3 August 28, 2018 linux-azure, linux-oem, linux-gcp vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 18.04 LTS - - Ubuntu 16.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - - linux-azure: Linux kernel for Microsoft Azure Cloud systems - - linux-oem: Linux kernel for OEM processors - - linux-gcp: Linux kernel for Google Cloud Platform (GCP) systems Details: It was discovered that, when attempting to handle an out-of-memory situation, a null pointer dereference could be triggered in the Linux kernel in some circumstances. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-1000200) Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly validate meta-data information. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10323) Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly validate xattr information. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10840) Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly keep meta-data information consistent in some situations. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10881) Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations. An attacker could use this to specially craft an ext4 filesystem that caused a denial of service (system crash) when mounted. (CVE-2018-1093) Jann Horn discovered that the Linux kernel's implementation of random seed data reported that it was in a ready state before it had gathered sufficient entropy. An attacker could use this to expose sensitive information. (CVE-2018-1108) It was discovered that the procfs filesystem did not properly handle processes mapping some memory elements onto files. A local attacker could use this to block utilities that examine the procfs filesystem to report operating system state, such as ps(1). (CVE-2018-1120) Jann Horn discovered that the ext4 filesystem implementation in the Linux kernel did not properly keep xattr information consistent in some situations. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-11412) Piotr Gabriel Kosinski and Daniel Shapira discovered a stack-based buffer overflow in the CDROM driver implementation of the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-11506) Shankara Pailoor discovered that a race condition existed in the socket handling code in the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2018-12232) Shankara Pailoor discovered that the JFS filesystem implementation in the Linux kernel contained a buffer overflow when handling extended attributes. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-12233) Felix Wilhelm discovered that the KVM implementation in the Linux kernel did not properly perform permission checks in some situations when nested virtualization is used. An attacker in a guest VM could possibly use this to escape into an outer VM or the host OS. (CVE-2018-12904) Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly handle an error condition with a corrupted xfs image. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash). (CVE-2018-13094) It was discovered that the Linux kernel did not properly handle setgid file creation when performed by a non-member of the group. A local attacker could use this to gain elevated privileges. (CVE-2018-13405) Silvio Cesare discovered that the generic VESA frame buffer driver in the Linux kernel contained an integer overflow. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-13406) Jakub Jirasek discovered that multiple use-after-free errors existed in the USB/IP implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-5814) It was discovered that a race condition existed in the ARM Advanced Microcontroller Bus Architecture (AMBA) driver in the Linux kernel that could result in a double free. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-9415) It was discovered that an information leak existed in the generic SCSI driver in the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-1000204) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.04 LTS: linux-image-4.15.0-1017-oem 4.15.0-1017.20 linux-image-4.15.0-1022-azure 4.15.0-1022.23 linux-image-azure 4.15.0.1022.22 linux-image-azure-edge 4.15.0.1022.22 linux-image-oem 4.15.0.1017.19 Ubuntu 16.04 LTS: linux-image-4.15.0-1018-gcp 4.15.0-1018.19~16.04.2 linux-image-4.15.0-1022-azure 4.15.0-1022.22~16.04.1 linux-image-azure 4.15.0.1022.28 linux-image-gcp 4.15.0.1018.32 linux-image-gke 4.15.0.1018.32 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://usn.ubuntu.com/usn/usn-3752-3 https://usn.ubuntu.com/usn/usn-3752-1 CVE-2018-1000200, CVE-2018-1000204, CVE-2018-10323, CVE-2018-10840, CVE-2018-10881, CVE-2018-1093, CVE-2018-1108, CVE-2018-1120, CVE-2018-11412, CVE-2018-11506, CVE-2018-12232, CVE-2018-12233, CVE-2018-12904, CVE-2018-13094, CVE-2018-13405, CVE-2018-13406, CVE-2018-5814, CVE-2018-9415 Package Information: https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1022.23 https://launchpad.net/ubuntu/+source/linux-oem/4.15.0-1017.20 https://launchpad.net/ubuntu/+source/linux-azure/4.15.0-1022.22~16.04.1 https://launchpad.net/ubuntu/+source/linux-gcp/4.15.0-1018.19~16.04.2 ========================================================================== Ubuntu Security Notice USN-3753-1 August 24, 2018 linux, linux-aws, linux-kvm, linux-raspi2, linux-snapdragon vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 16.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - - linux: Linux kernel - - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - - linux-kvm: Linux kernel for cloud environments - - linux-raspi2: Linux kernel for Raspberry Pi 2 - - linux-snapdragon: Linux kernel for Snapdragon processors Details: It was discovered that the generic SCSI driver in the Linux kernel did not properly enforce permissions on kernel memory access. A local attacker could use this to expose sensitive information or possibly elevate privileges. (CVE-2017-13168) Wen Xu discovered that a use-after-free vulnerability existed in the ext4 filesystem implementation in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10876, CVE-2018-10879) Wen Xu discovered that a buffer overflow existed in the ext4 filesystem implementation in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10877) Wen Xu discovered that an out-of-bounds write vulnerability existed in the ext4 filesystem implementation in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10878, CVE-2018-10882) Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly keep meta-data information consistent in some situations. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10881) Shankara Pailoor discovered that the JFS filesystem implementation in the Linux kernel contained a buffer overflow when handling extended attributes. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-12233) Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly handle an error condition with a corrupted xfs image. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash). (CVE-2018-13094) It was discovered that the Linux kernel did not properly handle setgid file creation when performed by a non-member of the group. A local attacker could use this to gain elevated privileges. (CVE-2018-13405) Silvio Cesare discovered that the generic VESA frame buffer driver in the Linux kernel contained an integer overflow. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-13406) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: linux-image-4.4.0-1032-kvm 4.4.0-1032.38 linux-image-4.4.0-1066-aws 4.4.0-1066.76 linux-image-4.4.0-1095-raspi2 4.4.0-1095.103 linux-image-4.4.0-1099-snapdragon 4.4.0-1099.104 linux-image-4.4.0-134-generic 4.4.0-134.160 linux-image-4.4.0-134-generic-lpae 4.4.0-134.160 linux-image-4.4.0-134-lowlatency 4.4.0-134.160 linux-image-4.4.0-134-powerpc-e500mc 4.4.0-134.160 linux-image-4.4.0-134-powerpc-smp 4.4.0-134.160 linux-image-4.4.0-134-powerpc64-emb 4.4.0-134.160 linux-image-4.4.0-134-powerpc64-smp 4.4.0-134.160 linux-image-aws 4.4.0.1066.68 linux-image-generic 4.4.0.134.140 linux-image-generic-lpae 4.4.0.134.140 linux-image-kvm 4.4.0.1032.31 linux-image-lowlatency 4.4.0.134.140 linux-image-powerpc-e500mc 4.4.0.134.140 linux-image-powerpc-smp 4.4.0.134.140 linux-image-powerpc64-emb 4.4.0.134.140 linux-image-powerpc64-smp 4.4.0.134.140 linux-image-raspi2 4.4.0.1095.95 linux-image-snapdragon 4.4.0.1099.91 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://usn.ubuntu.com/usn/usn-3753-1 CVE-2017-13168, CVE-2018-10876, CVE-2018-10877, CVE-2018-10878, CVE-2018-10879, CVE-2018-10881, CVE-2018-10882, CVE-2018-12233, CVE-2018-13094, CVE-2018-13405, CVE-2018-13406 Package Information: https://launchpad.net/ubuntu/+source/linux/4.4.0-134.160 https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1066.76 https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1032.38 https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1095.103 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1099.104 ========================================================================== Ubuntu Security Notice USN-3753-2 August 24, 2018 linux-lts-xenial, linux-aws vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 14.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - - linux-aws: Linux kernel for Amazon Web Services (AWS) systems - - linux-lts-xenial: Linux hardware enablement kernel from Xenial for Trusty Details: USN-3753-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04 LTS. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu 14.04 LTS. It was discovered that the generic SCSI driver in the Linux kernel did not properly enforce permissions on kernel memory access. A local attacker could use this to expose sensitive information or possibly elevate privileges. (CVE-2017-13168) Wen Xu discovered that a use-after-free vulnerability existed in the ext4 filesystem implementation in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10876, CVE-2018-10879) Wen Xu discovered that a buffer overflow existed in the ext4 filesystem implementation in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10877) Wen Xu discovered that an out-of-bounds write vulnerability existed in the ext4 filesystem implementation in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10878, CVE-2018-10882) Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly keep meta-data information consistent in some situations. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10881) Shankara Pailoor discovered that the JFS filesystem implementation in the Linux kernel contained a buffer overflow when handling extended attributes. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-12233) Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly handle an error condition with a corrupted xfs image. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash). (CVE-2018-13094) It was discovered that the Linux kernel did not properly handle setgid file creation when performed by a non-member of the group. A local attacker could use this to gain elevated privileges. (CVE-2018-13405) Silvio Cesare discovered that the generic VESA frame buffer driver in the Linux kernel contained an integer overflow. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-13406) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: linux-image-4.4.0-1028-aws 4.4.0-1028.31 linux-image-4.4.0-134-generic 4.4.0-134.160~14.04.1 linux-image-4.4.0-134-generic-lpae 4.4.0-134.160~14.04.1 linux-image-4.4.0-134-lowlatency 4.4.0-134.160~14.04.1 linux-image-4.4.0-134-powerpc-e500mc 4.4.0-134.160~14.04.1 linux-image-4.4.0-134-powerpc-smp 4.4.0-134.160~14.04.1 linux-image-4.4.0-134-powerpc64-emb 4.4.0-134.160~14.04.1 linux-image-4.4.0-134-powerpc64-smp 4.4.0-134.160~14.04.1 linux-image-aws 4.4.0.1028.28 linux-image-generic-lpae-lts-xenial 4.4.0.134.114 linux-image-generic-lts-xenial 4.4.0.134.114 linux-image-lowlatency-lts-xenial 4.4.0.134.114 linux-image-powerpc-e500mc-lts-xenial 4.4.0.134.114 linux-image-powerpc-smp-lts-xenial 4.4.0.134.114 linux-image-powerpc64-emb-lts-xenial 4.4.0.134.114 linux-image-powerpc64-smp-lts-xenial 4.4.0.134.114 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://usn.ubuntu.com/usn/usn-3753-2 https://usn.ubuntu.com/usn/usn-3753-1 CVE-2017-13168, CVE-2018-10876, CVE-2018-10877, CVE-2018-10878, CVE-2018-10879, CVE-2018-10881, CVE-2018-10882, CVE-2018-12233, CVE-2018-13094, CVE-2018-13405, CVE-2018-13406 Package Information: https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1028.31 https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-134.160~14.04.1 ========================================================================== Ubuntu Security Notice USN-3754-1 August 24, 2018 linux vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 14.04 LTS Summary: Several security issues were fixed in the Linux kernel. Software Description: - - linux: Linux kernel Details: Ralf Spenneberg discovered that the ext4 implementation in the Linux kernel did not properly validate meta block groups. An attacker with physical access could use this to specially craft an ext4 image that causes a denial of service (system crash). (CVE-2016-10208) It was discovered that an information disclosure vulnerability existed in the ACPI implementation of the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory addresses). (CVE-2017-11472) It was discovered that a buffer overflow existed in the ACPI table parsing implementation in the Linux kernel. A local attacker could use this to construct a malicious ACPI table that, when loaded, caused a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-11473) It was discovered that the generic SCSI driver in the Linux kernel did not properly initialize data returned to user space in some situations. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2017-14991) It was discovered that a race condition existed in the packet fanout implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-15649) Andrey Konovalov discovered that the Ultra Wide Band driver in the Linux kernel did not properly check for an error condition. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16526) Andrey Konovalov discovered that the ALSA subsystem in the Linux kernel contained a use-after-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16527) Andrey Konovalov discovered that the ALSA subsystem in the Linux kernel did not properly validate USB audio buffer descriptors. A physically proximate attacker could use this cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16529) Andrey Konovalov discovered that the USB subsystem in the Linux kernel did not properly validate USB interface association descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16531) Andrey Konovalov discovered that the usbtest device driver in the Linux kernel did not properly validate endpoint metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16532) Andrey Konovalov discovered that the USB subsystem in the Linux kernel did not properly validate USB HID descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16533) Andrey Konovalov discovered that the USB subsystem in the Linux kernel did not properly validate USB BOS metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16535) Andrey Konovalov discovered that the Conexant cx231xx USB video capture driver in the Linux kernel did not properly validate interface descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16536) Andrey Konovalov discovered that the SoundGraph iMON USB driver in the Linux kernel did not properly validate device metadata. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16537) It was discovered that the DM04/QQBOX USB driver in the Linux kernel did not properly handle device attachment and warm-start. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16538) Andrey Konovalov discovered an out-of-bounds read in the GTCO digitizer USB driver for the Linux kernel. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16643) Andrey Konovalov discovered that the video4linux driver for Hauppauge HD PVR USB devices in the Linux kernel did not properly handle some error conditions. A physically proximate attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-16644) Andrey Konovalov discovered that the IMS Passenger Control Unit USB driver in the Linux kernel did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16645) Andrey Konovalov discovered that the QMI WWAN USB driver did not properly validate device descriptors. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-16650) It was discovered that the USB Virtual Host Controller Interface (VHCI) driver in the Linux kernel contained an information disclosure vulnerability. A physically proximate attacker could use this to expose sensitive information (kernel memory). (CVE-2017-16911) It was discovered that the USB over IP implementation in the Linux kernel did not validate endpoint numbers. A remote attacker could use this to cause a denial of service (system crash). (CVE-2017-16912) It was discovered that the USB over IP implementation in the Linux kernel did not properly validate CMD_SUBMIT packets. A remote attacker could use this to cause a denial of service (excessive memory consumption). (CVE-2017-16913) It was discovered that the USB over IP implementation in the Linux kernel contained a NULL pointer dereference error. A remote attacker could use this to cause a denial of service (system crash). (CVE-2017-16914) It was discovered that the core USB subsystem in the Linux kernel did not validate the number of configurations and interfaces in a device. A physically proximate attacker could use this to cause a denial of service (system crash). (CVE-2017-17558) It was discovered that an integer overflow existed in the perf subsystem of the Linux kernel. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-18255) It was discovered that the keyring subsystem in the Linux kernel did not properly prevent a user from creating keyrings for other users. A local attacker could use this cause a denial of service or expose sensitive information. (CVE-2017-18270) Andy Lutomirski and Willy Tarreau discovered that the KVM implementation in the Linux kernel did not properly emulate instructions on the SS segment register. A local attacker in a guest virtual machine could use this to cause a denial of service (guest OS crash) or possibly gain administrative privileges in the guest OS. (CVE-2017-2583) Dmitry Vyukov discovered that the KVM implementation in the Linux kernel improperly emulated certain instructions. A local attacker could use this to obtain sensitive information (kernel memory). (CVE-2017-2584) It was discovered that the KLSI KL5KUSB105 serial-to-USB device driver in the Linux kernel did not properly initialize memory related to logging. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2017-5549) Andrey Konovalov discovered an out-of-bounds access in the IPv6 Generic Routing Encapsulation (GRE) tunneling implementation in the Linux kernel. An attacker could use this to possibly expose sensitive information. (CVE-2017-5897) Andrey Konovalov discovered that the LLC subsytem in the Linux kernel did not properly set up a destructor in certain situations. A local attacker could use this to cause a denial of service (system crash). (CVE-2017-6345) Dmitry Vyukov discovered race conditions in the Infrared (IrDA) subsystem in the Linux kernel. A local attacker could use this to cause a denial of service (deadlock). (CVE-2017-6348) Andy Lutomirski discovered that the KVM implementation in the Linux kernel was vulnerable to a debug exception error when single-stepping through a syscall. A local attacker in a non-Linux guest vm could possibly use this to gain administrative privileges in the guest vm. (CVE-2017-7518) Tuomas Haanpää and Ari Kauppi discovered that the NFSv2 and NFSv3 server implementations in the Linux kernel did not properly handle certain long RPC replies. A remote attacker could use this to cause a denial of service (system crash). (CVE-2017-7645) Pengfei Wang discovered that a race condition existed in the NXP SAA7164 TV Decoder driver for the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2017-8831) Pengfei Wang discovered that the Turtle Beach MultiSound audio device driver in the Linux kernel contained race conditions when fetching from the ring-buffer. A local attacker could use this to cause a denial of service (infinite loop). (CVE-2017-9984, CVE-2017-9985) It was discovered that the wait4() system call in the Linux kernel did not properly validate its arguments in some situations. A local attacker could possibly use this to cause a denial of service. (CVE-2018-10087) It was discovered that the kill() system call implementation in the Linux kernel did not properly validate its arguments in some situations. A local attacker could possibly use this to cause a denial of service. (CVE-2018-10124) Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly validate meta-data information. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10323) Zhong Jiang discovered that a use-after-free vulnerability existed in the NUMA memory policy implementation in the Linux kernel. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10675) Wen Xu discovered that a buffer overflow existed in the ext4 filesystem implementation in the Linux kernel. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-10877) Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly keep meta-data information consistent in some situations. An attacker could use this to construct a malicious ext4 image that, when mounted, could cause a denial of service (system crash). (CVE-2018-10881) Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations. An attacker could use this to specially craft an ext4 file system that caused a denial of service (system crash) when mounted. (CVE-2018-1092) Wen Xu discovered that the ext4 filesystem implementation in the Linux kernel did not properly handle corrupted meta data in some situations. An attacker could use this to specially craft an ext4 filesystem that caused a denial of service (system crash) when mounted. (CVE-2018-1093) It was discovered that the cdrom driver in the Linux kernel contained an incorrect bounds check. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-10940) Shankara Pailoor discovered that the JFS filesystem implementation in the Linux kernel contained a buffer overflow when handling extended attributes. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-12233) Wen Xu discovered that the XFS filesystem implementation in the Linux kernel did not properly handle an error condition with a corrupted xfs image. An attacker could use this to construct a malicious xfs image that, when mounted, could cause a denial of service (system crash). (CVE-2018-13094) It was discovered that the Linux kernel did not properly handle setgid file creation when performed by a non-member of the group. A local attacker could use this to gain elevated privileges. (CVE-2018-13405) Silvio Cesare discovered that the generic VESA frame buffer driver in the Linux kernel contained an integer overflow. A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-13406) Daniel Jiang discovered that a race condition existed in the ipv4 ping socket implementation in the Linux kernel. A local privileged attacker could use this to cause a denial of service (system crash). (CVE-2017-2671) It was discovered that an information leak existed in the generic SCSI driver in the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-1000204) It was discovered that a memory leak existed in the Serial Attached SCSI (SAS) implementation in the Linux kernel. A physically proximate attacker could use this to cause a denial of service (memory exhaustion). (CVE-2018-10021) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: linux-image-3.13.0-157-generic 3.13.0-157.207 linux-image-3.13.0-157-generic-lpae 3.13.0-157.207 linux-image-3.13.0-157-lowlatency 3.13.0-157.207 linux-image-3.13.0-157-powerpc-e500 3.13.0-157.207 linux-image-3.13.0-157-powerpc-e500mc 3.13.0-157.207 linux-image-3.13.0-157-powerpc-smp 3.13.0-157.207 linux-image-3.13.0-157-powerpc64-emb 3.13.0-157.207 linux-image-3.13.0-157-powerpc64-smp 3.13.0-157.207 linux-image-generic 3.13.0.157.167 linux-image-generic-lpae 3.13.0.157.167 linux-image-lowlatency 3.13.0.157.167 linux-image-powerpc-e500 3.13.0.157.167 linux-image-powerpc-e500mc 3.13.0.157.167 linux-image-powerpc-smp 3.13.0.157.167 linux-image-powerpc64-emb 3.13.0.157.167 linux-image-powerpc64-smp 3.13.0.157.167 After a standard system update you need to reboot your computer to make all the necessary changes. ATTENTION: Due to an unavoidable ABI change the kernel updates have been given a new version number, which requires you to recompile and reinstall all third party kernel modules you might have installed. Unless you manually uninstalled the standard kernel metapackages (e.g. linux-generic, linux-generic-lts-RELEASE, linux-virtual, linux-powerpc), a standard system upgrade will automatically perform this as well. References: https://usn.ubuntu.com/usn/usn-3754-1 CVE-2016-10208, CVE-2017-11472, CVE-2017-11473, CVE-2017-14991, CVE-2017-15649, CVE-2017-16526, CVE-2017-16527, CVE-2017-16529, CVE-2017-16531, CVE-2017-16532, CVE-2017-16533, CVE-2017-16535, CVE-2017-16536, CVE-2017-16537, CVE-2017-16538, CVE-2017-16643, CVE-2017-16644, CVE-2017-16645, CVE-2017-16650, CVE-2017-16911, CVE-2017-16912, CVE-2017-16913, CVE-2017-16914, CVE-2017-17558, CVE-2017-18255, CVE-2017-18270, CVE-2017-2583, CVE-2017-2584, CVE-2017-2671, CVE-2017-5549, CVE-2017-5897, CVE-2017-6345, CVE-2017-6348, CVE-2017-7518, CVE-2017-7645, CVE-2017-8831, CVE-2017-9984, CVE-2017-9985, CVE-2018-1000204, CVE-2018-10021, CVE-2018-10087, CVE-2018-10124, CVE-2018-10323, CVE-2018-10675, CVE-2018-10877, CVE-2018-10881, CVE-2018-1092, CVE-2018-1093, CVE-2018-10940, CVE-2018-12233, CVE-2018-13094, CVE-2018-13405, CVE-2018-13406 Package Information: https://launchpad.net/ubuntu/+source/linux/3.13.0-157.207 - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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