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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3237 Linux kernel vulnerabilities 23 October 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Linux kernel Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Access Privileged Data -- Existing Account Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-16658 CVE-2018-14734 CVE-2018-10938 CVE-2018-9363 Reference: ESB-2018.2981 ESB-2018.2955 ESB-2018.2831 Original Bulletin: http://www.ubuntu.com/usn/usn-3797-1 http://www.ubuntu.com/usn/usn-3797-2 Comment: This bulletin contains two (2) Ubuntu security advisories. - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3797-1 October 23, 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: Noam Rathaus discovered that a use-after-free vulnerability existed in the Infiniband implementation in the Linux kernel. An attacker could use this to cause a denial of service (system crash). (CVE-2018-14734) It was discovered that an integer overflow existed in the CD-ROM driver of the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-16658) It was discovered that an integer overflow existed in the HID Bluetooth implementation in the Linux kernel that could lead to a buffer overwrite. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-9363) Yves Younan discovered that the CIPSO labeling implementation in the Linux kernel did not properly handle IP header options in some situations. A remote attacker could use this to specially craft network traffic that could cause a denial of service (infinite loop). (CVE-2018-10938) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 16.04 LTS: linux-image-4.4.0-1036-kvm 4.4.0-1036.42 linux-image-4.4.0-1070-aws 4.4.0-1070.80 linux-image-4.4.0-1099-raspi2 4.4.0-1099.107 linux-image-4.4.0-1103-snapdragon 4.4.0-1103.108 linux-image-4.4.0-138-generic 4.4.0-138.164 linux-image-4.4.0-138-generic-lpae 4.4.0-138.164 linux-image-4.4.0-138-lowlatency 4.4.0-138.164 linux-image-4.4.0-138-powerpc-e500mc 4.4.0-138.164 linux-image-4.4.0-138-powerpc-smp 4.4.0-138.164 linux-image-4.4.0-138-powerpc64-emb 4.4.0-138.164 linux-image-4.4.0-138-powerpc64-smp 4.4.0-138.164 linux-image-aws 4.4.0.1070.72 linux-image-generic 4.4.0.138.144 linux-image-generic-lpae 4.4.0.138.144 linux-image-kvm 4.4.0.1036.35 linux-image-lowlatency 4.4.0.138.144 linux-image-powerpc-e500mc 4.4.0.138.144 linux-image-powerpc-smp 4.4.0.138.144 linux-image-powerpc64-emb 4.4.0.138.144 linux-image-powerpc64-smp 4.4.0.138.144 linux-image-raspi2 4.4.0.1099.99 linux-image-snapdragon 4.4.0.1103.95 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-3797-1 CVE-2018-10938, CVE-2018-14734, CVE-2018-16658, CVE-2018-9363 Package Information: https://launchpad.net/ubuntu/+source/linux/4.4.0-138.164 https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1070.80 https://launchpad.net/ubuntu/+source/linux-kvm/4.4.0-1036.42 https://launchpad.net/ubuntu/+source/linux-raspi2/4.4.0-1099.107 https://launchpad.net/ubuntu/+source/linux-snapdragon/4.4.0-1103.108 ========================================================================== Ubuntu Security Notice USN-3797-2 October 23, 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-3797-1 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. Noam Rathaus discovered that a use-after-free vulnerability existed in the Infiniband implementation in the Linux kernel. An attacker could use this to cause a denial of service (system crash). (CVE-2018-14734) It was discovered that an integer overflow existed in the CD-ROM driver of the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory). (CVE-2018-16658) It was discovered that a integer overflow existed in the HID Bluetooth implementation in the Linux kernel that could lead to a buffer overwrite. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2018-9363) Yves Younan discovered that the CIPSO labeling implementation in the Linux kernel did not properly handle IP header options in some situations. A remote attacker could use this to specially craft network traffic that could cause a denial of service (infinite loop). (CVE-2018-10938) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 LTS: linux-image-4.4.0-1032-aws 4.4.0-1032.35 linux-image-4.4.0-138-generic 4.4.0-138.164~14.04.1 linux-image-4.4.0-138-generic-lpae 4.4.0-138.164~14.04.1 linux-image-4.4.0-138-lowlatency 4.4.0-138.164~14.04.1 linux-image-4.4.0-138-powerpc-e500mc 4.4.0-138.164~14.04.1 linux-image-4.4.0-138-powerpc-smp 4.4.0-138.164~14.04.1 linux-image-4.4.0-138-powerpc64-emb 4.4.0-138.164~14.04.1 linux-image-4.4.0-138-powerpc64-smp 4.4.0-138.164~14.04.1 linux-image-aws 4.4.0.1032.32 linux-image-generic-lpae-lts-xenial 4.4.0.138.118 linux-image-generic-lts-xenial 4.4.0.138.118 linux-image-lowlatency-lts-xenial 4.4.0.138.118 linux-image-powerpc-e500mc-lts-xenial 4.4.0.138.118 linux-image-powerpc-smp-lts-xenial 4.4.0.138.118 linux-image-powerpc64-emb-lts-xenial 4.4.0.138.118 linux-image-powerpc64-smp-lts-xenial 4.4.0.138.118 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-3797-2 https://usn.ubuntu.com/usn/usn-3797-1 CVE-2018-10938, CVE-2018-14734, CVE-2018-16658, CVE-2018-9363 Package Information: https://launchpad.net/ubuntu/+source/linux-aws/4.4.0-1032.35 https://launchpad.net/ubuntu/+source/linux-lts-xenial/4.4.0-138.164~14.04.1 - --------------------------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 iQIVAwUBW87Fa2aOgq3Tt24GAQhAsg/6AvTPaD6iuEhgHg+9nuSVB+Mg6lE0CiZD VTmXF9BKIXlNQGYa0R7LvFmnKy7uFUF+4jHldXai92fsmBAiofEvtK1fdIy1tcjq wbP9COVukXLxr6PIRTYx4cC7c3OVWvDKeaB6lvRxZ6gqlmpsU2ChiEQirwam+8S2 i2GN+hd3gsm87F/8TcrUBQrSJuJTMw2ggIcuZiF7/t3/uun149/VINJaTU4SqS/L A5RDDCRO8+wEfZYKMqVbUyTrzPFYlnYl8NNBvBZOBmV9e5fCh6S7zUBJRSjAHy0C C0FNiZyUALnmDN6maKHSNM9tcJSg0xamEADNHOEc/2nwRAD/M7JZKQGx8DdnLskR ucktb0NR25B7+Rj66DOnXlCsJHADYRRgrtOcV5RGPZ4Dte+n74xhj5pch19g2OE/ jyIvcL9RfObVdARbFmq2zl9I5uJiqEz0X7oB3Z20wp9mLwseUuzSLYNv13F0AFOy QTJ/W4iI1xGyAvuJSP3LbvfFe72uWDIcUMpE0eDPdTclhCFJOkzoAOGtMq+bqHSS w1wimoiOPVlRtcSrODcjLgWiev//y55WlcEgmYFB/RhY4ExpLd8d9toi5KIbDstz 8v0a9VVudWj3HMDzaiRMHotlzBwAeJ/9o1RqzSGKXiEqc2t3DXrvrWDMzCYZMSF2 fWNI2XSX43I= =aTaK -----END PGP SIGNATURE-----