USN-4297-1: runC vulnerabilities

9 March 2020

Several security issues were fixed in runc.

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Releases

Packages

  • 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)

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 19.10
Ubuntu 18.04

In general, a standard system update will make all the necessary changes.

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