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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.1295 xorg-server security update 16 April 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: xorg-server Publisher: Debian Operating System: Debian GNU/Linux Impact/Access: Increased Privileges -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2021-3472 Reference: ESB-2021.1283 ESB-2021.1227 Original Bulletin: http://www.debian.org/lts/security/2021/dla-2627 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 - - ------------------------------------------------------------------------- Debian LTS Advisory DLA-2627-1 debian-lts@lists.debian.org https://www.debian.org/lts/security/ Chris Lamb April 15, 2021 https://wiki.debian.org/LTS - - ------------------------------------------------------------------------- Package : xorg-server Version : 2:1.19.2-1+deb9u8 CVE ID : CVE-2021-3472 Jan-Niklas Sohn discovered that there was an input validation failure in the X.Org display server. Insufficient checks on the lengths of the XInput extension's ChangeFeedbackControl request could have lead to out of bounds memory accesses in the X server. These issues can lead to privilege escalation for authorised clients, particularly on systems where the X server is running as a privileged user. For Debian 9 "Stretch", this problem has been fixed in version 2:1.19.2-1+deb9u8. We recommend that you upgrade your xorg-server packages. For the detailed security status of xorg-server please refer to its security tracker page at: https://security-tracker.debian.org/tracker/xorg-server Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS - -----BEGIN PGP SIGNATURE----- iQIzBAEBCAAdFiEEwv5L0nHBObhsUz5GHpU+J9QxHlgFAmB4E6AACgkQHpU+J9Qx Hlj6qw//ZBpTkP0Af19OglE2NR3AujsTErxp4lI8sc5LwOlXtnfcVFEpl4kpLBpR suMrlmkryaedBBl0Zeq8qnoimuMPdhiTing+77I1YW7hNfhwZJdDjLsoVFG5qXe6 D9/fD683vgL4IiKdHxLNfqcaaL8QYm2KmyKLbHsTvQ+12b7pq9TwenbIHGloGV7K nsTZrXkx37loi5cdYHQLw09qKYXcTaQx+GZ7XH0UgiJi4XJCjY7gr6/4+qnqVYW/ OnpmGYh9SycH1cFHkPfmWDGrBd3omKStkx7keBXXBQVgyyUpIDp9A3J62lM3vX9U czexLKJTCx77CviBFcJYigi41ST/XT/HCVy2pkvxv7d6KXA+fCKPL7jogBy43Zfy 3d2SL9mH7MxAfP5TVOsmShPrLqY9FGm0MteXjSKX7inoAxJmJx9F2w7JtzfNNDpG 2a0mJABw4ZRRiEL5OlEonAwqExyR+LO6cFA+xWKmZwsy4lMEeOBo3RAzX+U21iLB wDATwPL0Q97XM3b3iOJShCXr2nWYrNhd2mWFFEewXVEZWvSVqyI9uVtr9FW6/0YJ LD9jXp1BBbt7/bMZv+KSLVMavKLOu4Vm6bwClKX5NYS1ZRXWVX71XkuId5ntpoco raxAtjWgda1KidFGStU2ABoFoil4tyWhg7CuB+KCoyfVhIiM4Wg= =eyBB - -----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 iQIVAwUBYHjhteNLKJtyKPYoAQj97g/+M+ZGKGMnX4gqeORmKa5FWvtwnmwCXT5t OtRl14H/vzDwk+Oyk1zCBlI8aPiduIdaw+IPk88u1C7Glr+4u/aeOdke/nFYYK4+ CZg2EYfPrVDzOtWW6uKDJ5EJTlwYSmDHIgF00UK3nsfqrfHHXjSmjHGaNbqtehou g0v859VLn0dGq5iRJTk/n+lmYRvsp95zif2aAmkNX8tXcLX/Mwj3dA8Ls9nnsDKd mupy3mnxleCsEFNBPAjYMIPJU9VE5ugVTYTEW7ut2ENcsJ0J3UpshqT9lBN0I4um 4MRxtNaHjMJ2lofA/2VBASSGZl1mtgrWQbicYV//g5jy8qUGJvCcVYC86fyC9nQ8 IaM8lsvR1YRTpSlwAGwg5gnX22pwgLHoc3Xt8s2A877ZD9YRn5Zbej/ADJVNmIrx CgPwMEs3cog6GDJN6Jlf8/U46wtd1HIlT7DNl/v4JfmI2pGm5UiX7aRm5rMh+49M Rh0deT+3EiN8LFAwDn/1y5L8RSXXi4x2B0lHKqw04cx135HhUbIL2usrEEeryOgl jduJewnXN/7OLSWsrR8cA0O7NfkIxQv0d42hEQ7wYrjqRBgb3X6cbdJ6Cbi34mPW AE9cZlefxjqPqJRfxiVJr9uL/xZo8w/lKe63igNAtZElbloiZZbtoefJ08QZewa0 RlTeI9lJ7+s= =OeKL -----END PGP SIGNATURE-----