Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.2543 libXfont vulnerabilities 11 October 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libxfont Publisher: Ubuntu Operating System: Ubuntu UNIX variants (UNIX, Linux, OSX) Impact/Access: Denial of Service -- Existing Account Access Confidential Data -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2017-13722 CVE-2017-13720 Reference: ESB-2017.2538 Original Bulletin: http://www.ubuntu.com/usn/usn-3442-1 - --------------------------BEGIN INCLUDED TEXT-------------------- ========================================================================== Ubuntu Security Notice USN-3442-1 October 10, 2017 libxfont, libxfont1, libxfont2 vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - - Ubuntu 17.04 - - Ubuntu 16.04 LTS - - Ubuntu 14.04 LTS Summary: Several security issues were fixed in libXfont. Software Description: - - libxfont: X11 font rasterisation library - - libxfont1: X11 font rasterisation library - - libxfont2: X11 font rasterisation library Details: It was discovered that libXfont incorrectly handled certain patterns in PatternMatch. A local attacker could use this issue to cause libXfont to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2017-13720) It was discovered that libXfont incorrectly handled certain malformed PCF files. A local attacker could use this issue to cause libXfont to crash, resulting in a denial of service, or possibly obtain sensitive information. (CVE-2017-13722) Update instructions: The problem can be corrected by updating your system to the following package versions: Ubuntu 17.04: libxfont1 1:1.5.2-4ubuntu0.1 libxfont2 1:2.0.1-3ubuntu0.1 Ubuntu 16.04 LTS: libxfont1 1:1.5.1-1ubuntu0.16.04.3 libxfont2 1:2.0.1-3~ubuntu16.04.2 Ubuntu 14.04 LTS: libxfont1 1:1.4.7-1ubuntu0.3 After a standard system update you need to reboot your computer to make all the necessary changes. References: https://www.ubuntu.com/usn/usn-3442-1 CVE-2017-13720, CVE-2017-13722 Package Information: https://launchpad.net/ubuntu/+source/libxfont/1:2.0.1-3ubuntu0.1 https://launchpad.net/ubuntu/+source/libxfont1/1:1.5.2-4ubuntu0.1 https://launchpad.net/ubuntu/+source/libxfont/1:1.5.1-1ubuntu0.16.04.3 https://launchpad.net/ubuntu/+source/libxfont2/1:2.0.1-3~ubuntu16.04.2 https://launchpad.net/ubuntu/+source/libxfont/1:1.4.7-1ubuntu0.3 - --------------------------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: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== 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 iQIVAwUBWd2I1Ix+lLeg9Ub1AQgomQ/+JARLXva6QZ/SfaE0wRqXWoRh2WWVZ7Eo FZ/lEnMsk/7S0nWP7tK6GQeYOjPx+8O6CYIOMf1ZT41lafH82vwO8FbQcVFA271W FUZOiN/34VOzHEd85+X9O8geIumOwp6u1Z9X/a60DMhxJry42AuOTQ5aM6L43n3H jHX4IjszoqahketQ0ZXq5e7SwGPuRLM35K/1gJffWs0Gj7n3Ayw4d0NsDJw8LeWE IxefLaetOwSgcg73NnglMiOYN/o4HvkjSz83MENdHAixnN4zHZBzAnkPrr5DnsfA IkZKEyG3/AdWDe/UPjJ/5+qV8RQ3IAB8fPS/FU75lTuhENKIyqwHS11Up2fIh2Ck SpUnqyFfz9Huc1LGu6/Zz+EvWALTyDE7mgkO4bbpmv7CcK/6tm3onfQrXaLLmtiL u/JoyhJeGT1kovwYRd+sYsT1XNye/EVoC6+zOrt0GrPjPZ7zM0rVmF4OJt7Ak5J3 houKGz42bh7vcrG4YY/c7eQyEtX6F/ZdNOYbpIo51yn+9m0NdBNWml/k0jVRhM7K h7DjtEISmqtFFa3pyAOldenjO+H853ogDhUQgddoWhwkU2hB/VnUf5/M4z1jxwkG VnO+LuvMitD0lCUc94P1PIAqHKw9e22vshxAeLSjC8e3299SPYG4qoKY6gSKQGGU xH3n7XVlEYI= =mcxK -----END PGP SIGNATURE-----