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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1921 Linux kernel vulnerabilities patched in Ubuntu 14.04 LTS and 16.04 LTS 3 July 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: linux linux-aws linux-kvm linux-raspi2 linux-snapdragon Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Access Privileged Data -- Existing Account Denial of Service -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-1000204 CVE-2018-10124 CVE-2018-10087 CVE-2018-10021 CVE-2018-7755 CVE-2018-5814 CVE-2018-3665 CVE-2017-18257 CVE-2017-18255 CVE-2017-13695 Reference: ESB-2018.1917 ESB-2018.1916 ESB-2018.1831 ESB-2018.1770 Original Bulletin: http://www.ubuntu.com/usn/usn-3696-1 http://www.ubuntu.com/usn/usn-3696-2 Comment: This bulletin contains two (2) Ubuntu security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3696-1 July 02, 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 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) Wei Fang discovered an integer overflow in the F2FS filesystem implementation in the Linux kernel. A local attacker could use this to cause a denial of service. (CVE-2017-18257) 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 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) Julian Stecklina and Thomas Prescher discovered that FPU register states (such as MMX, SSE, and AVX registers) which are lazily restored are potentially vulnerable to a side channel attack. A local attacker could use this to expose sensitive information. (CVE-2018-3665) Jakub Jirasek discovered that multiple use-after-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 an information leak vulnerability existed in the floppy driver in the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-7755) Seunghun Han discovered an information leak in the ACPI handling code in the Linux kernel when handling early termination of ACPI table loading. A local attacker could use this to expose sensitive informal (kernel address locations). (CVE-2017-13695) 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 16.04 LTS: linux-image-4.4.0-1029-kvm 4.4.0-1029.34 linux-image-4.4.0-1062-aws 4.4.0-1062.71 linux-image-4.4.0-1092-raspi2 4.4.0-1092.100 linux-image-4.4.0-1095-snapdragon 4.4.0-1095.100 linux-image-4.4.0-130-generic 4.4.0-130.156 linux-image-4.4.0-130-generic-lpae 4.4.0-130.156 linux-image-4.4.0-130-lowlatency 4.4.0-130.156 linux-image-4.4.0-130-powerpc-e500mc 4.4.0-130.156 linux-image-4.4.0-130-powerpc-smp 4.4.0-130.156 linux-image-4.4.0-130-powerpc64-emb 4.4.0-130.156 linux-image-4.4.0-130-powerpc64-smp 4.4.0-130.156 linux-image-aws 4.4.0.1062.64 linux-image-generic 4.4.0.130.136 linux-image-generic-lpae 4.4.0.130.136 linux-image-kvm 4.4.0.1029.28 linux-image-lowlatency 4.4.0.130.136 linux-image-powerpc-e500mc 4.4.0.130.136 linux-image-powerpc-smp 4.4.0.130.136 linux-image-powerpc64-emb 4.4.0.130.136 linux-image-powerpc64-smp 4.4.0.130.136 linux-image-raspi2 4.4.0.1092.92 linux-image-snapdragon 4.4.0.1095.87 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-3696-1 CVE-2017-13695, CVE-2017-18255, CVE-2017-18257, CVE-2018-1000204, CVE-2018-10021, CVE-2018-10087, CVE-2018-10124, CVE-2018-3665, CVE-2018-5814, CVE-2018-7755 Package Information: https://launchpad.net/ubuntu/+source/linux/4.4.0-130.156 https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1062.71 https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1029.34 https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1092.100 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1095.100 - -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpgY7tWAjCaQ8jrvULwmejQBegfQFAls6i7EACgkQLwmejQBe gfTfJRAAr05kQjoE+WwwNs45n886FTQ/5fY9mn4k0JOeyFWCRR/DlvSjzw6KyB39 dj64LpH8CTodNqO81OGqe6oIDJgu9jhCGt1qSDz2XAv1CUxLVGzfeNpVel59aKqs 6GgwXUkL3mEfcHWL4NNuyT2plGYZBEeOuO2whxLiTKruMhkKDWTeorEmV4W5bz23 leHZ6acJDt9dfrrvonjsBLj5xiT/PMl9fENObNuxPDM8oyL1KnhQFJDAdaIod65v PSg76Y3cFFnqx+Ge5VAeYUwAPcFAdTPjz9YuI1Tlll2KwkJ69R6SSKAoSyvQ55ZB +QIi/RSjZwJEDec7LAdDqSU08uWVlPsbOZMaMZDNfXj99jSIPEWzSRT6KG/PlCJR xiqj0QpJI9f9BPDwi/zPTfOTdJd+9yMGSqjRnB8UpDR7aN6i9qjw+oLyZALaSTsK BveeC399bMLCdIAw6vMYTBMBE0YOc7GFPcY2OkZMnaa6rVTOLLmV+/GAGcsKHtEk rPk+ghji9m+YGAC0KKfae93B6ekSCY1QJdJV7D0rSYwU7BoIAWhuO2JrNJk2ia0m ayQKry+Dn0cew8BOqoJTPv0hDylo8hmop7sg2buL63vnzE1lATFlNGGAxFnQiKa1 YuwpGYSmvwZVQjo/Hj61qnKcyGxtayigX9aicH45wTp3gZl42IY= =OD+T - -----END PGP SIGNATURE----- - -------------------------------------------------------------------------------- ========================================================================== Ubuntu Security Notice USN-3696-2 July 02, 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-3696-1 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 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) Wei Fang discovered an integer overflow in the F2FS filesystem implementation in the Linux kernel. A local attacker could use this to cause a denial of service. (CVE-2017-18257) 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 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) Julian Stecklina and Thomas Prescher discovered that FPU register states (such as MMX, SSE, and AVX registers) which are lazily restored are potentially vulnerable to a side channel attack. A local attacker could use this to expose sensitive information. (CVE-2018-3665) Jakub Jirasek discovered that multiple use-after-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 an information leak vulnerability existed in the floppy driver in the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-7755) Seunghun Han discovered an information leak in the ACPI handling code in the Linux kernel when handling early termination of ACPI table loading. A local attacker could use this to expose sensitive informal (kernel address locations). (CVE-2017-13695) 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-4.4.0-1024-aws 4.4.0-1024.25 linux-image-4.4.0-130-generic 4.4.0-130.156~14.04.1 linux-image-4.4.0-130-generic-lpae 4.4.0-130.156~14.04.1 linux-image-4.4.0-130-lowlatency 4.4.0-130.156~14.04.1 linux-image-4.4.0-130-powerpc-e500mc 4.4.0-130.156~14.04.1 linux-image-4.4.0-130-powerpc-smp 4.4.0-130.156~14.04.1 linux-image-4.4.0-130-powerpc64-emb 4.4.0-130.156~14.04.1 linux-image-4.4.0-130-powerpc64-smp 4.4.0-130.156~14.04.1 linux-image-aws 4.4.0.1024.24 linux-image-generic-lpae-lts-xenial 4.4.0.130.110 linux-image-generic-lts-xenial 4.4.0.130.110 linux-image-lowlatency-lts-xenial 4.4.0.130.110 linux-image-powerpc-e500mc-lts-xenial 4.4.0.130.110 linux-image-powerpc-smp-lts-xenial 4.4.0.130.110 linux-image-powerpc64-emb-lts-xenial 4.4.0.130.110 linux-image-powerpc64-smp-lts-xenial 4.4.0.130.110 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-3696-2 https://usn.ubuntu.com/usn/usn-3696-1 CVE-2017-13695, CVE-2017-18255, CVE-2017-18257, CVE-2018-1000204, CVE-2018-10021, CVE-2018-10087, CVE-2018-10124, CVE-2018-3665, CVE-2018-5814, CVE-2018-7755 Package Information: https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1024.25 https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-130.156~14.04.1 - --------------------------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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWzrzjGaOgq3Tt24GAQhvVhAAhzz9cVj+q4pyfC3+XNGO2Xeq1Tlbx2l0 BhhaPSG/xUrw7hmOt85nDjQCzbaTEpMTAnXiyQ6FhB3zilhRfCthq3HsjWu9M9Y3 ZlYUhd0jY3vJgmTVKEtzpz6q25VbRXRAdzgBrWLDesbwbHf/kNTc14/x3r5FPUoq ahW/+HS96MwK5yLO9j4nhGAfSXuc/9mIFdpk9LRMPenRtqKIAm8JVAO/y8qAcigQ UC1bje3YC/SFR6dXcRCHkKOZy5GZ4jc5ng2A6YgPTZgPQ/fVtAlfw6pxa20IocG9 rJNTsPKLYx9kcIbpwFV3vwBMMGbmJ+hlGiUQ294IDWDqmmMspBKbBecFdOY+tZi6 1y6xTwleHquq5ztN+Z5OSLnM8wi/OGv1c327hvF1abCSgj8CpZEvEQ3AzQjwjO8V UMwNb8dZ46VMdMagLap5q95/erqtgdDS2VHxB577nJlc0C8b0v4scus9cxNm+ejW uC2vUVbnw25jq9q2JajsOlzEEBB0u7jeIev28AUG2OdoqaD9P6JCJZ/uiMSRoSD7 VqEqmIG+tSX/VGkNkGhwDoIgfwkqtCPZ76zNQIZlWK4A0GP+OiDNsleiuQ48b2ba JdSQg7iBylrV8J6PPmiKWGSSzvaZbDAYF/s07d2Tw0NH1acI+W5YO6JGfJ29rToL mz2jdRgNoEk= =hM0P -----END PGP SIGNATURE-----