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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.1188 USN-4315-1: Apport vulnerabilities 2 April 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Apport Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Root Compromise -- Existing Account Read-only Data Access -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2020-8833 CVE-2020-8831 Original Bulletin: https://usn.ubuntu.com/4315-1/ - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4315-1: Apport vulnerabilities 2 April 2020 apport vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 19.10 o Ubuntu 18.04 LTS o Ubuntu 16.04 LTS Summary Several security issues were fixed in Apport. Software Description o apport - automatically generate crash reports for debugging Details Maximilien Bourgeteau discovered that the Apport lock file was created with insecure permissions. This could allow a local attacker to escalate their privileges via a symlink attack. (CVE-2020-8831) Maximilien Bourgeteau discovered a race condition in Apport when setting crash report permissions. This could allow a local attacker to read arbitrary files via a symlink attack. (CVE-2020-8833) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10 apport - 2.20.11-0ubuntu8.8 python-apport - 2.20.11-0ubuntu8.8 python3-apport - 2.20.11-0ubuntu8.8 Ubuntu 18.04 LTS apport - 2.20.9-0ubuntu7.14 python-apport - 2.20.9-0ubuntu7.14 python3-apport - 2.20.9-0ubuntu7.14 Ubuntu 16.04 LTS apport - 2.20.1-0ubuntu2.23 python-apport - 2.20.1-0ubuntu2.23 python3-apport - 2.20.1-0ubuntu2.23 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades . In general, a standard system update will make all the necessary changes. References o CVE-2020-8831 o CVE-2020-8833 - --------------------------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 iQIVAwUBXoWA5WaOgq3Tt24GAQjcKQ/7BJ24ZtYoW6YjipoFwdQpZlM0lENOo3VY CyS6tjmPOexr8NQ3a/8NkPgG4gTB7hJP2+yIcmlnVtYP/QFZS0xcxc93VPQaQJbV Dnt0tuktDy6SWV7Qx+HbicyXdQZXGY99LCWel4/Qmbgc5WTcDT2LEHLpkW6EE7DE rQimFBMg4QU8veBavy61bEhKWty6m0jGZ6zvmxl5DFcuPezU5PLdoNVqZ0WrXZam ubRSMcXKqOnK3zKoyQZMuY7dcYEtPJI8MsikGZZsDT5Xxd5qJ3KToVEaefjzmG+e koLa0Mdl1Mgj40qbA7YGsMF7bJ6qaBqm9H6BTSdAnGdhHi/BrbpPUzRAVVOqMI+j 27XeCnZXkEch1vPnbR+3ZefXnrYBAngKe3uop6y4ZImz7C4w8vH0dlpPFlbBw3Qu WTLHpWdIwmUqJlYo7Y8+pevGLou8ir4z1k45kVidAQ++LjadzxFspLBXvOeh0TVl gSO1hFvcxrnmZ0LSwnUVN5ZWSncabwa/CZh+hwECMyfMIwJEhbyCzvO1OO6VZl0z SjwXPPSzFfUKdE88c3qHUE/GLj2HooziIGz6YFOtNeKbsHWTMcTKq1deC76bbUI6 JEQfqu0SL+GbiBgiQeZwDiiEe8+FRWHvnzDk7rnFtni14BX72hLcNaKhHpFS0xGY RkJVi+MsxWs= =qpoB -----END PGP SIGNATURE-----