==========================================================================
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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