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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.0429 USN-4263-2: Sudo vulnerability 6 February 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Sudo Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Root Compromise -- Existing Account Resolution: Patch/Upgrade CVE Names: CVE-2019-18634 Reference: ESB-2020.0400 ESB-2020.0390 ESB-2020.0387 ESB-2020.0351 Original Bulletin: https://usn.ubuntu.com/4263-2/ - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4263-2: Sudo vulnerability 5 February 2020 sudo vulnerability A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 14.04 ESM o Ubuntu 12.04 ESM Summary Sudo could allow unintended access to the administrator account. Software Description o sudo - Provide limited super user privileges to specific users Details USN-4263-1 fixed a vulnerability in Sudo. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Original advisory details: Joe Vennix discovered that Sudo incorrectly handled memory operations when the pwfeedback option is enabled. A local attacker could possibly use this issue to obtain unintended access to the administrator account. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 14.04 ESM sudo - 1.8.9p5-1ubuntu1.5+esm3 sudo-ldap - 1.8.9p5-1ubuntu1.5+esm3 Ubuntu 12.04 ESM sudo - 1.8.3p1-1ubuntu3.9 sudo-ldap - 1.8.3p1-1ubuntu3.9 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 USN-4263-1 o CVE-2019-18634 - --------------------------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 iQIVAwUBXjuuQmaOgq3Tt24GAQgBIxAAxrg3JHh5axdLP64TndUqYX05xgaPDulW gKyz0Gle4YEupL4km3t6WJHMzdSBRfKWyJ+yGNjJ6EkoHBDjgWRv5ntsjrRc3ZcT HLlpAX8w1ZZeVsD0Uzcl/FzYAItCAhKUSRmab+Ht/vVRCVg9X37mMR9M+Jh1IKBC 6UgCQgEgyAuhO0h4TEZb2Zp4gy0oMTsAeBc0242aEiggXO9+lM78KmrA0NyGhftz Ao3c02oxNqy33d8i9COvU7IhOEGSA5Nqeg7W50OaGm5tNmtZ+NCIohrZR2xxEyZq 7DOCU1fHmsEZQkasrWg1MYm2HykgtQUtn4hOEZtssSAxGIa61w/kzUEB7EIAMw9k 7U5PuBcLVxjzNEBZssYIhKHrpI1GDzFuVqLXz6YwqUwVpl3EEg12xl8MkIBrxZlO N8SAcDDoZpUa8E6JhXqGMzrFDpdqLkj/xwfC7Hw5qw8Wg6KXTdlSteH6GgPDpFpu EKTmVMttAv5GO37wGsfbhFryR9j1X9fNfmiKVvvxzYwzZ0jXD686m7Yfl3oyYWpf 9KtrmwZ2htu0hno96yOYSyKHT2DZ0I23Jale8RE+JQlDZ2TAeDZsPQTBaCu8aPOX syEADcKwHWCjlGK8/Ox59YGrF6NfDcYM34pyQa4UrAGAa8fuJZNYe6ztaNnLaDMH B/VSQV6OyeQ= =Dkl4 -----END PGP SIGNATURE-----