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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2022.1630 USN-5378-1: Gzip vulnerability 14 April 2022 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Gzip Publisher: Ubuntu Operating System: Ubuntu Resolution: Patch/Upgrade CVE Names: CVE-2022-1271 Original Bulletin: https://ubuntu.com/security/notices/USN-5378-1 Comment: CVSS (Max): 7.1 CVE-2022-1271 (CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H) CVSS Source: Red Hat Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H - --------------------------BEGIN INCLUDED TEXT-------------------- USN-5378-1: Gzip vulnerability 13 April 2022 Gzip could be made to overwrite arbitrary files. Releases o Ubuntu 21.10 o Ubuntu 20.04 LTS o Ubuntu 18.04 LTS Packages o gzip - GNU compression utilities Details Cleemy Desu Wayo discovered that Gzip incorrectly handled certain filenames. If a user or automated system were tricked into performing zgrep operations with specially crafted filenames, a remote attacker could overwrite arbitrary files. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 21.10 o gzip - 1.10-4ubuntu1.1 Ubuntu 20.04 o gzip - 1.10-0ubuntu4.1 Ubuntu 18.04 o gzip - 1.6-5ubuntu1.2 In general, a standard system update will make all the necessary changes. References o CVE-2022-1271 Related notices o USN-5378-2 : xz-utils, liblzma-dev, liblzma5, liblzma-doc, xzdec o USN-5378-3 : xz-utils, liblzma-dev, liblzma5, liblzma-doc, xzdec o USN-5378-4 : gzip - --------------------------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 iQIVAwUBYldjLuNLKJtyKPYoAQgpNRAAkRKdKGwFTBoalxOAZMIvzd79HDRnA0PH k6wx4GjVDzfT2bjV6i4nf9cudfXu3W7Xxcxr3RShPV7KlO1Yl3I5Bucl5AOvfRWF 4PJeeYcFFY/kvscTqnGhcavoATbyBww5qFREca2yPsJVvgO5amrePv92iqN5tE01 5P9KUoUA9NFXRt6UOyxXexivLsK/RbCbv1n54ZevFZbRAIqnmTeP9ZZDR6lvyph7 4Lixfg4CETPym1bP9Jpf5Y4xpOIoYJNVZ3Ewu6l+ALrcdHlSgZsKlCeGSvHDhfhG CUMlsU5LitnH5b4zWgX8Y8K1Z7yPwBhWS/kr6LdMutsTQyk1o1TL69gWBpB3OWPM qaWepNftY+edOl5+eIeFSEYy0YqP3dwIvWDw1XVf8vFMLbh6+X8AQmy4tr0QBzcd rnQbrUHitnzXQd1QKXu3JrMogB4RHL9/vP29hlV5Y9QnoNMEEVtft5oE3IdYTeLf DFh0E4mcYpwIVMVZnsCuwuOxzdBNGAFvGhZ7dxv5iyFJhD5yzSmmxqUxvqhhMYcG KYsICMZp+TNJclBca8+4AuZA4k5eGW3HUf3wJFtAUyoZxf51IX3Up0ykbdadiDXi W11qw/oSO6/Wd3cs5F5XPS8/iSrAPy/E41cVj4VWzh+Klj6tNDb4h0fzAT30V9as izt9KVoCCAI= =vjQj -----END PGP SIGNATURE-----