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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.2594 USN-5446-1: dpkg vulnerability 27 May 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: dpkg Publisher: Ubuntu Operating System: Ubuntu Resolution: Patch/Upgrade CVE Names: CVE-2022-1664 Original Bulletin: https://ubuntu.com/security/notices/USN-5446-1 Comment: CVSS (Max): None available when published - --------------------------BEGIN INCLUDED TEXT-------------------- USN-5446-1: dpkg vulnerability 26 May 2022 A malicious source package could write files outside the unpack directory. Releases o Ubuntu 22.04 LTS o Ubuntu 21.10 o Ubuntu 20.04 LTS o Ubuntu 18.04 LTS Packages o dpkg - Debian package management system Details Max Justicz discovered that dpkg incorrectly handled unpacking certain source packages. If a user or an automated system were tricked into unpacking a specially crafted source package, a remote attacker could modify files outside the target unpack directory, leading to a denial of service or potentially gaining access to the system. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 o dpkg - 1.21.1ubuntu2.1 o libdpkg-perl - 1.21.1ubuntu2.1 Ubuntu 21.10 o dpkg - 1.20.9ubuntu2.2 o libdpkg-perl - 1.20.9ubuntu2.2 Ubuntu 20.04 o dpkg - 1.19.7ubuntu3.2 o libdpkg-perl - 1.19.7ubuntu3.2 Ubuntu 18.04 o dpkg - 1.19.0.5ubuntu2.4 o libdpkg-perl - 1.19.0.5ubuntu2.4 In general, a standard system update will make all the necessary changes. References o CVE-2022-1664 - --------------------------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: https://auscert.org.au/gpg-key/ iQIVAwUBYpAPSckNZI30y1K9AQhaOw//dWIM2aviN5QLoaW9KYVdC4pfWODp3keN GfOOB2yVi3PuUFornfhpg7W9fdxCQ4atoXX3Q9n0IZYge0Nd2zyvQ2Z4+HUiQZ15 mB5gnUp9k4tJeCLbuvqxh66CxiueBz4Rt2WQijY7fIey1sCgqvwZmCOMLw7hJ40q fXNC61G2uLdud7MHgpBEo4jwCvhVatu88i0a4PatqFHV8P714o/gaHgkHdP56f4k Lv44qZeFA7DwIdFgVL8tsSyBTAsJdb7x+TJh5jyE36u29rqEf7tK3PPTt/LHp5/R E2VWeSUaKnDtBI0o7WoqX2kdXcWpnu9cw//kpxf7SAOQFcljT6jkW5MnqaJm3bgW ZV2K7PaiaK3QI6WKHkjIRWCNsArrdWFSEoLDWn2AwwCtn8+Xac9+yb1DEt97VEwR th6OhP4t/OnDdUl9qypRS8UypAuAbm4OQiykrgBxrvCctQ2lEwnEh6K7BpTNP+f+ 4KrvMvRayujeuLAlrd3S3m72DhH0uNRinJEwQuWEp3YNlPvy52WcnnLykKw2XnuV T+FbC4+VcyT04iG8V+dex2V71W93W8xjTqBy3QKGDfvWPMtwKXnPaH0Iqt/q37wg W3rzKZM4zqmTtPkc/mwLoH9fDWf/FtmnBqgwQiZCQ8xgbp/zvj4l6+NdKLk1qTz8 4w/IwmVxZEI= =pmpL -----END PGP SIGNATURE-----