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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.3575 Linux kernel vulnerability patched in Ubuntu 15 November 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: linux linux-aws linux-gcp linux-kvm linux-raspi2 Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Root Compromise -- Existing Account Denial of Service -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2018-15471 Reference: ESB-2018.3057 ESB-2018.2940 ESB-2018.2698 Original Bulletin: http://www.ubuntu.com/usn/usn-3819-1 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3819-1 November 14, 2018 linux, linux-aws, linux-gcp, linux-kvm, linux-raspi2 vulnerability ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 18.10 Summary: The system could be made to crash or run programs as an administrator. 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: Felix Wilhelm discovered that the Xen netback driver in the Linux kernel did not properly perform input validation in some situations. An attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 18.10: linux-image-4.18.0-1003-gcp 4.18.0-1003.4 linux-image-4.18.0-1004-aws 4.18.0-1004.5 linux-image-4.18.0-1004-kvm 4.18.0-1004.4 linux-image-4.18.0-1006-raspi2 4.18.0-1006.8 linux-image-4.18.0-11-generic 4.18.0-11.12 linux-image-4.18.0-11-generic-lpae 4.18.0-11.12 linux-image-4.18.0-11-lowlatency 4.18.0-11.12 linux-image-4.18.0-11-snapdragon 4.18.0-11.12 linux-image-aws 4.18.0.1004.4 linux-image-gcp 4.18.0.1003.3 linux-image-generic 4.18.0.11.12 linux-image-generic-lpae 4.18.0.11.12 linux-image-gke 4.18.0.1003.3 linux-image-kvm 4.18.0.1004.4 linux-image-lowlatency 4.18.0.11.12 linux-image-raspi2 4.18.0.1006.3 linux-image-snapdragon 4.18.0.11.12 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-3819-1 CVE-2018-15471 Package Information: https://launchpad.net/ubuntu/+source/linux/4.18.0-11.12 https://launchpad.net/ubuntu/+source/linux-aws/4.18.0-1004.5 https://launchpad.net/ubuntu/+source/linux-gcp/4.18.0-1003.4 https://launchpad.net/ubuntu/+source/linux-kvm/4.18.0-1004.4 https://launchpad.net/ubuntu/+source/linux-raspi2/4.18.0-1006.8 - -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEEpgY7tWAjCaQ8jrvULwmejQBegfQFAlvstLcACgkQLwmejQBe gfSXCRAAqDCt8yCMJMVNlhSsElRTHE8/TXgGEX6DkeLEsD8HxW7aw9JnrszBCKP+ 2ArTmvlinuzFe105lfl2PnGbngyKlu5pzjOXH4pDNwcHd89VEikFHJ3Hj4+Yc36r 3IqjAGkP7F6sF1HjMCOefWhO7GKie6ZXyziRat19AeX8KbnoUoRykvTt3A1vbVvs Ha/4IqDAEhMB6ZEjYEyh0kHLYi5YSOqXG2g1RFwnB14uqTzXWbOromACDF5VVFYJ +ssknB9BbtnPhMx1fhQXzqzGIPivNMuozW/fmrj89YFVO6ayIOKetuypf66gHOLo B3rktJWwjD0dWuquaLGpm75vvqxyGI0rrBcQQrnSTfKsB/F01jrhKQJqNJwJAN8+ KXUdnaKxmoOAShoW7mdfmhvC2JxzeRSn6Ok2pa//bh53aUW8O6PsChZcOhjobE9p TSuvGUt+g1GRuVzwcDHjUGVliuXPUM9Ed8wriBAdovxn2C1SZigzgVokANOuQ/x+ x5/6lL+LdKpjcG8AJ/2LQOjGgryZrcKtu14fpt4q5ykAr9nXlSD7HeLb0dtwM5ya VAyn7VVlxfykFO1yHnHhvh4toJEdKL1YoLuaRFqJqoJvaFgURs2Ws8kzQKQC7tZ/ qGqj2BsWgtVBgQUyF4Q4KMFwcxmv5wgz2cUCeeoDpz/KkEKjZBM= =0AfI - -----END PGP SIGNATURE----- - --------------------------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 iQIVAwUBW+z18WaOgq3Tt24GAQhVwBAAhxhT+e6P84DFBzF6ri9BhdLMmgU0sZ91 qEdoi930hDEIdvYN1xBYMJ+UWJhJx2xRtm6zuEynY+Sj2ZGxYStG+Ub56ZHvThn8 qYDAMfRMfFlSC/fSQFoye8+5h5gWhpxZ5o+Zgmyzw5LK+RC80fEzO63cZKye7bX/ giRss1xjoHrSvni7U/YfBh1vaF4GpBpaZNHDr6gE9GYfUluMWQgaiJLlOqXoysKt g8D7zUbH7RPqM/WIlJvSaax99M3h4iH/BPO/vjzddba6Gc5wBtUKhbmWzYVUr97R 8WUg9Umfz5xVutKTwDOExJtDGBWhRy3Drlf7cccAoNewT/kcmDvAVel2lXfY7PTU 1XvJ8DVznwEEU8rbByJkyZt4NdJ0rog06kaud3PMApPb51vhEUceNsq53DLD1w8Z n37ro6SaoAvRfxVCfSxWF7eSijeOFyNKxK97Fk9qrFgLCr7YRQtA17fPMxd8zC4h QWZVG7qpTaO0MUiY+02RMwi5QGNK+aPU8BELQMAV/eUAhuIyC5PYlFpkhXIV37t6 sekUp/e2O7Cd250ZMRJ0zFDpSk8k0/UHyDk0ES2viMyTU21OOh6fGd+pvHfbtMg9 PdTP9n43zfTGH5OzZsqnJurIth2spL+mPP6ai5xq4XbKrGbP7sN6wGZ7UFLuM9uh ACU6TJUTPQI= =6TEM -----END PGP SIGNATURE-----