========================================================================== Ubuntu Security Notice USN-4297-1 March 09, 2020
runc vulnerabilities ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 19.10 - Ubuntu 18.04 LTS Summary: Several security issues were fixed in runc. Software Description: - 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 In general, a standard system update will make all the necessary changes. References: https://usn.ubuntu.com/4297-1 CVE-2019-16884, CVE-2019-19921 Package Information: https://launchpad.net/ubuntu/+source/runc/1.0.0~rc10-0ubuntu1~19.10.2 https://launchpad.net/ubuntu/+source/runc/1.0.0~rc10-0ubuntu1~18.04.2
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