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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3111 USN-5078-1: Squashfs-Tools vulnerability 15 September 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Squashfs-Tools Publisher: Ubuntu Operating System: Ubuntu UNIX variants (UNIX, Linux, OSX) Impact/Access: Overwrite Arbitrary Files -- Unknown/Unspecified Reduced Security -- Unknown/Unspecified Resolution: Patch/Upgrade CVE Names: CVE-2021-41072 Original Bulletin: https://ubuntu.com/security/notices/USN-5078-1 Comment: This advisory references vulnerabilities in products which run on platforms other than Ubuntu. It is recommended that administrators running Squashfs-Tools check for an updated version of the software for their operating system. - --------------------------BEGIN INCLUDED TEXT-------------------- USN-5078-1: Squashfs-Tools vulnerability 15 September 2021 Squashfs-Tools could be made to overwrite files. Releases o Ubuntu 21.04 o Ubuntu 20.04 LTS o Ubuntu 18.04 LTS Packages o squashfs-tools - Tools to create and modify squashfs filesystems Details Richard Weinberger discovered that Squashfs-Tools mishandled certain malformed SQUASHFS files. An attacker could use this vulnerability to write arbitrary files to the filesystem. Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 21.04 o squashfs-tools - 1:4.4-2ubuntu0.2 Ubuntu 20.04 o squashfs-tools - 1:4.4-1ubuntu0.2 Ubuntu 18.04 o squashfs-tools - 1:4.3-6ubuntu0.18.04.4 In general, a standard system update will make all the necessary changes. References o CVE-2021-41072 - --------------------------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 iQIVAwUBYUF4duNLKJtyKPYoAQghfA/+ICYv1wQJj6dr3/itPeT0oXC53axCUu3L wsDeN2slkBGWIIxkvmWAWbj4rOeffA5+1lOBM50zxWM7C99TmRNr5YT5afNyuvNB GJPwqXfgHupIBRdFLTeYJXVC590LJYX13nmBks2HedO7VCFAadE1ysoKQPfK9xDZ 1TFWgi2txsxEigChQjwEd3q7QLc6N8AiDBXGyzrMVy/IroD1EenPxGQJFO6tdBW3 Z31OEqGIAVEFxJTuMIu+VWIHhU1yW0bmwygv4nmpPgNFPKMaCQYBvsuBKywYPyQC g3/ISuwnjLfa9TWQ3Z/ltgQNqR12+PRbVrLlfA1D6yiYS4fAgp1igqRXJyZ48x3p SfWld2E9dGeYioTnEyIy3cN2SgAw6jnwpo7KT0VWbio0NqwdDxU2rfS7THdDobYa gdStSSp0W5RgBfnPim10w/d0Xw8FX+8Z1QG8j8JlvVOELY5OM3Sxpz41NW4youO5 opjRF4a9LKwV5Tq6CgzxDh9ICRVQkcb2QD3AKKfxzoKUUZFM8I9iiutHnyK48hTU oSPXND4CK4ryyGWgx5nrnKsEDTHRUGFeno60HomnmARb7kjikjJZMLXL8tiHVemf mqw4KM+gdSYXlpIoPXq7NvyKFs00oiitdUL6ShZMV2hjPV81yJUyy+FiWicNDCsk cT152oCI/G8= =Nv5x -----END PGP SIGNATURE-----