08 February 2023
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2023.0705 USN-5845-2: OpenSSL vulnerabilities 8 February 2023 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: OpenSSL Publisher: Ubuntu Operating System: Ubuntu Resolution: Patch/Upgrade CVE Names: CVE-2023-0286 CVE-2023-0215 Original Bulletin: https://ubuntu.com/security/notices/USN-5845-2 Comment: CVSS (Max): 7.4 CVE-2023-0286 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H) CVSS Source: Red Hat Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H - --------------------------BEGIN INCLUDED TEXT-------------------- USN-5845-2: OpenSSL vulnerabilities 7 February 2023 Several security issues were fixed in OpenSSL. 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 16.04 ESM o Ubuntu 14.04 ESM Packages o openssl - Secure Socket Layer (SSL) cryptographic library and tools Details USN-5845-1 fixed several vulnerabilities in OpenSSL. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: David Benjamin discovered that OpenSSL incorrectly handled X.400 address processing. A remote attacker could possibly use this issue to read arbitrary memory contents or cause OpenSSL to crash, resulting in a denial of service. ( CVE-2023-0286 ) Octavio Galland and Marcel Bohme discovered that OpenSSL incorrectly handled streaming ASN.1 data. A remote attacker could use this issue to cause OpenSSL to crash, resulting in a denial of service, or possibly execute arbitrary code. ( CVE-2023-0215 ) 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 16.04 o libssl1.0.0 - 1.0.2g-1ubuntu4.20+esm6 Available with Ubuntu Pro Ubuntu 14.04 o libssl1.0.0 - 1.0.1f-1ubuntu2.27+esm6 Available with Ubuntu Pro After a standard system update you need to reboot your computer to make all the necessary changes. References o CVE-2023-0286 o CVE-2023-0215 Related notices o USN-5844-1 : openssl, libssl3, libssl1.1, libssl-dev, libssl-doc o USN-5845-1 : libssl1.0-dev, openssl1.0, libssl1.0.0 - --------------------------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 firstname.lastname@example.org 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: email@example.com 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/ iQIVAwUBY+L468kNZI30y1K9AQiyCw/8CX1nCJK4RBZsXWRrT44qGWXsVY0QNUwq e6CPSkgxCsICJdRAgEoEu4vKtfE4+1V7qkGnJk7/WKR4vaE8SDcgBIDFUgx4ApDo 7pyYhT097jfXW261TiN207QLLoAxHvaBZbadmiJSj4Qnv5evs7YdScrzTc+GU//P Ro2GSIBRTmkR9jNmlvJFCLMjCTRYCVrUt4V8+gFRtedHcl4yL591XRvEy0qQLG1n qoQkbO0tUkpx00BleYgzqJP33wrhWkqZ8KNqA3LFkjYOr7bxWZkc8CkQl8bbXJzh SnrSL1xJD9rQrhgVIrgvx9XKdffRbZSlHZUYzmMFCb5bcO42ZId94s5qwX2gYqxQ FCKM8X2a2lyhir1e1zLSwedP0XWuUPKI/TEay1tRynftoJkkBEdxK19TLbT8F4zW KPkHQgYKDjVFJQRp1jwVesoBxDhciytpK1uAQQay6l8LA7eZUJiZAAEPMw8yOjjL pvPhcOMj4CqKx+PH+sdi4FJBR+19XUIYugh4br1HPf43YPzljaWpOodqx+wc7YSJ 0QZPrVUuXIS4IXDs22uYf+K69OPH3CzPUgWp3accG4vJL9kJIzRxRa/nDQRtSKX1 PDtdCOs9BmvEwc3fww1UuhE8+iX/fzC6GznnPVQi8csEl90AoY5x56Hxc/H5veNg P4wiRc+ZTI4= =plbK -----END PGP SIGNATURE-----