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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2023.3070 USN-6097-1: Linux PTP vulnerability 30 May 2023 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Linux PTP Publisher: Ubuntu Operating System: Ubuntu Resolution: Patch/Upgrade CVE Names: CVE-2021-3570 Original Bulletin: https://ubuntu.com/security/notices/USN-6097-1 Comment: CVSS (Max): 8.8 CVE-2021-3570 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H) CVSS Source: NVD Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - --------------------------BEGIN INCLUDED TEXT-------------------- USN-6097-1: Linux PTP vulnerability 29 May 2023 Linux PTP could be made to crash, run arbitrary code, or expose sensitive information if it received specially crafted input. Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. Learn more about Ubuntu Pro Releases o Ubuntu 20.04 LTS o Ubuntu 18.04 ESM o Ubuntu 16.04 ESM Packages o linuxptp - Precision Time Protocol (PTP, IEEE1588) implementation for Linux Details It was discovered that Linux PTP did not properly perform a length check when forwarding a PTP message between ports. A remote attacker could possibly use this issue to access sensitive information, execute arbitrary code, or cause a denial of service. Reduce your security exposure Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines. Learn more about Ubuntu Pro Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 o linuxptp - 1.9.2-1ubuntu0.1 Ubuntu 18.04 o linuxptp - 1.8-1ubuntu0.1 Ubuntu 16.04 o linuxptp - 1.6-1ubuntu0.1~esm1 Available with Ubuntu Pro In general, a standard system update will make all the necessary changes. References o CVE-2021-3570 - --------------------------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. 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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). 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