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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2020.0850 USN-4297-1: runC vulnerabilities 10 March 2020 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: runC Publisher: Ubuntu Operating System: Ubuntu Impact/Access: Execute Arbitrary Code/Commands -- Existing Account Increased Privileges -- Existing Account Denial of Service -- Existing Account Unauthorised Access -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-19921 CVE-2019-16884 Reference: ESB-2020.0461 ESB-2020.0115 ESB-2020.0074 ESB-2019.3972 Original Bulletin: https://usn.ubuntu.com/4297-1/ - --------------------------BEGIN INCLUDED TEXT-------------------- USN-4297-1: runC vulnerabilities 9 March 2020 runc vulnerabilities A security issue affects these releases of Ubuntu and its derivatives: o Ubuntu 19.10 o Ubuntu 18.04 LTS Summary Several security issues were fixed in runc. Software Description o runc - Open Container Project Details It was discovered that runC incorrectly checked mount targets. An attacker with a malicious container image could possibly mount over the /proc directory and escalate privileges. This issue only affected Ubuntu 18.04 LTS. (CVE-2019-16884) It was discovered that runC incorrectly performed access control. An attacker could possibly use this issue to escalate privileges. (CVE-2019-19921) Update instructions The problem can be corrected by updating your system to the following package versions: Ubuntu 19.10 runc - 1.0.0~rc10-0ubuntu1~19.10.2 Ubuntu 18.04 LTS runc - 1.0.0~rc10-0ubuntu1~18.04.2 To update your system, please follow these instructions: https:// wiki.ubuntu.com/Security/Upgrades . In general, a standard system update will make all the necessary changes. References o CVE-2019-16884 o CVE-2019-19921 - --------------------------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 iQIVAwUBXmb9+WaOgq3Tt24GAQijfRAAq1ZbMQzuTS3Uz8x0TZKhHxCrq3t6T2x1 CTM18/mmyx/6yqdJvFqFTTziFO3c3g5+nHoWPOwuXjO6xHaYJvdA9nIFp5mKu/XF jpPGlwVlDKU04hrfSVWrSIByLh9vI151Id+LIRFq6jo1HFAAF287pumTxDjnLUXi zaOyqKQkFyob8KS4QhbBjxXBf3L9ikPNEhHBaYQCuGWx/bLmhUgZH+Zo2g7WOT8K K2EqlND/cRPXH/OFgdDrIimjozUluHKBJADVA/Y5rQBHwh4Yna+asE/P6SdMfXVC e6MuOgtkynR0b7Y+FTaSgn3LLSbZWC2cr3/3MX4ULZ/iu7i3UagB6RskJ7KYfLTN 8yXL8CqKFhsJq1R+xp44l+/4B0w3EULPzt5WUPgFYUdINSaW4RDl2x9vxbkeRuZ3 VwVhranEyrCv24NAMVMySKe0TamsxB+KYeNB1kxJketnYbQAOI6yg4xdLRzZffNf YfdOg5H+zEkWb4JR/qCsNO7xgiF0yA6/0WVT5ZAO47Nd5UdQYhFVtQ1hHXin5Aq3 8QMW2ev3agqkdXKpa1dmCOTsTeTxxbhXLadk+X58vFzgsgXBBK1WY3SQK/kiH4G5 4IFGuHlZaonRklBTfAEC0it10nOOOVyBkPJ3uKQbqbLIvv/utDQ8CGbB9Yi4F8IO WvDIfR9hmfU= =9BVj -----END PGP SIGNATURE-----