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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.0528.2 Kernel patched in Ubuntu 26 February 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Kernel Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Root Compromise -- Existing Account Access Privileged Data -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-17712 CVE-2017-15115 CVE-2017-8824 CVE-2017-5715 Reference: ESB-2018.0044 ESB-2017.3259 ASB-2018.0002.4 ESB-2018.0042.2 Original Bulletin: http://www.ubuntu.com/usn/usn-3581-1 http://www.ubuntu.com/usn/usn-3581-2 http://www.ubuntu.com/usn/usn-3582-1 http://www.ubuntu.com/usn/usn-3582-2 http://www.ubuntu.com/usn/usn-3581-3 Comment: This bulletin contains five (5) Ubuntu security advisories. Revision History: February 26 2018: Advisory published for Raspberry Pi 2 kernel February 23 2018: Initial Release - --------------------------BEGIN INCLUDED TEXT-------------------- USN-3581-1: Linux kernel vulnerabilities Ubuntu Security Notice USN-3581-1 22nd February, 2018 linux vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: * Ubuntu 17.10 Summary Several security issues were fixed in the Linux kernel. Software description * linux - Linux kernel Details Mohamed Ghannam discovered that the IPv4 raw socket implementation in the Linux kernel contained a race condition leading to uninitialized pointer usage. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2017-17712) ChunYu Wang discovered that a use-after-free vulnerability existed in the SCTP protocol 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-2017-15115) Mohamed Ghannam discovered a use-after-free vulnerability in the DCCP protocol 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-2017-8824) USN-3541-1 mitigated CVE-2017-5715 (Spectre Variant 2) for the amd64 architecture in Ubuntu 17.10. This update provides the compiler-based retpoline kernel mitigation for the amd64 and i386 architectures. Original advisory details: Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5715) Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 17.10: linux-image-generic 4.13.0.36.38 linux-image-4.13.0-36-generic-lpae 4.13.0-36.40 linux-image-generic-lpae 4.13.0.36.38 linux-image-4.13.0-36-lowlatency 4.13.0-36.40 linux-image-lowlatency 4.13.0.36.38 linux-image-4.13.0-36-generic 4.13.0-36.40 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades. 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 CVE-2017-15115, CVE-2017-17712, CVE-2017-5715, CVE-2017-8824 - -------------------------------------------------------------------------------- USN-3581-2: Linux kernel (HWE) vulnerabilities Ubuntu Security Notice USN-3581-2 22nd February, 2018 linux-hwe, linux-azure, linux-gcp, linux-oem 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-azure - Linux kernel for Microsoft Azure Cloud systems * linux-gcp - Linux kernel for Google Cloud Platform (GCP) systems * linux-hwe - Linux hardware enablement (HWE) kernel * linux-oem - Linux kernel for OEM processors Details USN-3581-1 fixed vulnerabilities in the Linux kernel for Ubuntu 17.10. This update provides the corresponding updates for the Linux Hardware Enablement (HWE) kernel from Ubuntu 17.10 for Ubuntu 16.04 LTS. Mohamed Ghannam discovered that the IPv4 raw socket implementation in the Linux kernel contained a race condition leading to uninitialized pointer usage. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2017-17712) ChunYu Wang discovered that a use-after-free vulnerability existed in the SCTP protocol 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-2017-15115) Mohamed Ghannam discovered a use-after-free vulnerability in the DCCP protocol 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-2017-8824) USN-3541-2 mitigated CVE-2017-5715 (Spectre Variant 2) for the amd64 architecture in Ubuntu 16.04 LTS. This update provides the compiler-based retpoline kernel mitigation for the amd64 and i386 architectures. Original advisory details: Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5715) Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 16.04 LTS: linux-image-gke 4.13.0.1011.13 linux-image-4.13.0-36-generic 4.13.0-36.40~16.04.1 linux-image-4.13.0-1011-gcp 4.13.0-1011.15 linux-image-gcp 4.13.0.1011.13 linux-image-generic-hwe-16.04 4.13.0.36.55 linux-image-oem 4.13.0.1021.25 linux-image-lowlatency-hwe-16.04 4.13.0.36.55 linux-image-4.13.0-36-lowlatency 4.13.0-36.40~16.04.1 linux-image-4.13.0-1011-azure 4.13.0-1011.14 linux-image-4.13.0-36-generic-lpae 4.13.0-36.40~16.04.1 linux-image-azure 4.13.0.1011.12 linux-image-generic-lpae-hwe-16.04 4.13.0.36.55 linux-image-4.13.0-1021-oem 4.13.0-1021.23 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades. 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 CVE-2017-15115, CVE-2017-17712, CVE-2017-5715, CVE-2017-8824 - -------------------------------------------------------------------------------- Ubuntu Security Notice USN-3582-1 February 22, 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: Mohamed Ghannam discovered that the IPv4 raw socket implementation in the Linux kernel contained a race condition leading to uninitialized pointer usage. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2017-17712) Laurent Guerby discovered that the mbcache feature in the ext2 and ext4 filesystems in the Linux kernel improperly handled xattr block caching. A local attacker could use this to cause a denial of service. (CVE-2015-8952) Vitaly Mayatskikh discovered that the SCSI subsystem in the Linux kernel did not properly track reference counts when merging buffers. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2017-12190) ChunYu Wang discovered that a use-after-free vulnerability existed in the SCTP protocol 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-2017-15115) Mohamed Ghannam discovered a use-after-free vulnerability in the DCCP protocol 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-2017-8824) USN-3540-1 mitigated CVE-2017-5715 (Spectre Variant 2) for the amd64 architecture in Ubuntu 16.04 LTS. This update provides the compiler-based retpoline kernel mitigation for the amd64 and i386 architectures. Original advisory details: Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5715) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: linux-image-4.4.0-1019-kvm 4.4.0-1019.24 linux-image-4.4.0-1052-aws 4.4.0-1052.61 linux-image-4.4.0-1085-raspi2 4.4.0-1085.93 linux-image-4.4.0-1087-snapdragon 4.4.0-1087.92 linux-image-4.4.0-116-generic 4.4.0-116.140 linux-image-4.4.0-116-generic-lpae 4.4.0-116.140 linux-image-4.4.0-116-lowlatency 4.4.0-116.140 linux-image-4.4.0-116-powerpc-e500mc 4.4.0-116.140 linux-image-4.4.0-116-powerpc-smp 4.4.0-116.140 linux-image-4.4.0-116-powerpc64-emb 4.4.0-116.140 linux-image-4.4.0-116-powerpc64-smp 4.4.0-116.140 linux-image-aws 4.4.0.1052.54 linux-image-generic 4.4.0.116.122 linux-image-generic-lpae 4.4.0.116.122 linux-image-kvm 4.4.0.1019.18 linux-image-lowlatency 4.4.0.116.122 linux-image-powerpc-e500mc 4.4.0.116.122 linux-image-powerpc-smp 4.4.0.116.122 linux-image-powerpc64-emb 4.4.0.116.122 linux-image-powerpc64-smp 4.4.0.116.122 linux-image-raspi2 4.4.0.1085.85 linux-image-snapdragon 4.4.0.1087.79 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-3582-1 CVE-2015-8952, CVE-2017-12190, CVE-2017-15115, CVE-2017-17712, CVE-2017-5715, CVE-2017-8824 Package Information: https://launchpad.net/ubuntu/+source/linux/4.4.0-116.140 https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1052.61 https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1019.24 https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1085.93 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1087.92 - -------------------------------------------------------------------------------- Ubuntu Security Notice USN-3582-2 February 22, 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-3582-1 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. Mohamed Ghannam discovered that the IPv4 raw socket implementation in the Linux kernel contained a race condition leading to uninitialized pointer usage. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2017-17712) Laurent Guerby discovered that the mbcache feature in the ext2 and ext4 filesystems in the Linux kernel improperly handled xattr block caching. A local attacker could use this to cause a denial of service. (CVE-2015-8952) Vitaly Mayatskikh discovered that the SCSI subsystem in the Linux kernel did not properly track reference counts when merging buffers. A local attacker could use this to cause a denial of service (memory exhaustion). (CVE-2017-12190) ChunYu Wang discovered that a use-after-free vulnerability existed in the SCTP protocol 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-2017-15115) Mohamed Ghannam discovered a use-after-free vulnerability in the DCCP protocol 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-2017-8824) USN-3540-2 mitigated CVE-2017-5715 (Spectre Variant 2) for the amd64 architecture in Ubuntu 14.04 LTS. This update provides the compiler-based retpoline kernel mitigation for the amd64 and i386 architectures. Original advisory details: Jann Horn discovered that microprocessors utilizing speculative execution and branch prediction may allow unauthorized memory reads via sidechannel attacks. This flaw is known as Spectre. A local attacker could use this to expose sensitive information, including kernel memory. (CVE-2017-5715) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: linux-image-4.4.0-1014-aws 4.4.0-1014.14 linux-image-4.4.0-116-generic 4.4.0-116.140~14.04.1 linux-image-4.4.0-116-generic-lpae 4.4.0-116.140~14.04.1 linux-image-4.4.0-116-lowlatency 4.4.0-116.140~14.04.1 linux-image-4.4.0-116-powerpc-e500mc 4.4.0-116.140~14.04.1 linux-image-4.4.0-116-powerpc-smp 4.4.0-116.140~14.04.1 linux-image-4.4.0-116-powerpc64-emb 4.4.0-116.140~14.04.1 linux-image-4.4.0-116-powerpc64-smp 4.4.0-116.140~14.04.1 linux-image-aws 4.4.0.1014.14 linux-image-generic-lpae-lts-xenial 4.4.0.116.98 linux-image-generic-lts-xenial 4.4.0.116.98 linux-image-lowlatency-lts-xenial 4.4.0.116.98 linux-image-powerpc-e500mc-lts-xenial 4.4.0.116.98 linux-image-powerpc-smp-lts-xenial 4.4.0.116.98 linux-image-powerpc64-emb-lts-xenial 4.4.0.116.98 linux-image-powerpc64-smp-lts-xenial 4.4.0.116.98 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-3582-2 https://usn.ubuntu.com/usn/usn-3582-1 CVE-2015-8952, CVE-2017-12190, CVE-2017-15115, CVE-2017-17712, CVE-2017-5715, CVE-2017-8824 Package Information: https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1014.14 https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-116.140~14.04.1 - ------------------------------------------------------------------------------- ========================================================================== Ubuntu Security Notice USN-3581-3 February 23, 2018 linux-raspi2 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 17.10 Summary: Several security issues were fixed in the Linux kernel. Software Description: - - linux-raspi2: Linux kernel for Raspberry Pi 2 Details: Mohamed Ghannam discovered that the IPv4 raw socket implementation in the Linux kernel contained a race condition leading to uninitialized pointer usage. A local attacker could use this to cause a denial of service or possibly execute arbitrary code. (CVE-2017-17712) ChunYu Wang discovered that a use-after-free vulnerability existed in the SCTP protocol 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-2017-15115) Mohamed Ghannam discovered a use-after-free vulnerability in the DCCP protocol 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-2017-8824) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 17.10: linux-image-4.13.0-1014-raspi2 4.13.0-1014.15 linux-image-raspi2 4.13.0.1014.12 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-3581-3 https://usn.ubuntu.com/usn/usn-3581-1 CVE-2017-15115, CVE-2017-17712, CVE-2017-8824 Package Information: https://launchpad.net/ubuntu/+source/linux-raspi2/4.13.0-1014.15 - --------------------------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. 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On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWpOKDox+lLeg9Ub1AQhIGA/+Mm+x5Luc1N8y/E/G4kziKPF9XCWFjSVD iW07gHZQR4xvvbj4j5WnMFCeYpP7xvkM3NrvYhy8fn1Hj1gJT7jI17oOtN2nahfG 7oHP9UpB/z2nk6xZ/IjSFzRwiNy9SujVAEWf69tp+xWFP+gj+3BKVZObGWuCoExr 0TPbuAqOhmZX3k1mabipH8g5zLggf4RwaAIUKol0JGkcbsyHQH9anVCdf3rLWeUX ouu+YVtdDH5ieNxrxkH0VyD2qEsQjTjvwF/72k4f/teLxXMaWedDeEuBPbSwvkJr IgBskHHi/YcRs+Oz1F6R2gcpVFUBJAvH7acfOFnDqLLIWKo6Ux/36YQg3XVRLlNb zDx2CB/VVeH9DuqrbhAVAjMeLI2q9a5Ggg8hi4EZmpzJZsfdM9E+XXlxKNjbAZMe Ls1xxdDf16Ftd1KSGOL63cekAtUmVKKFsFlEHO3BFoYxGnqIn5xYlT2BbEVlMRyl Mz0tn0MwcsZgzxmUYyNizKUbmCMfT582GIN+bSmV8CtZJR2LbUwYypZblCY8t2iu d0VNp+zHMYPYm8sOFEYj0S2kTMaaG4C5BpL4aPk/nFqtfjnWGipKLa6ScQKxrSV2 yxH8U+aHJ9pijClLJvj8BzNpR0XEmKOrjik6Gmrh5AOhLlCCBp3HtmI0dQ753QIu Okf7YW0eLUA= =KScx -----END PGP SIGNATURE-----