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USN-4867-1: runC vulnerabilities

10 August 2021

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. (CVE-2019-16884)

Etienne Champetier discovered that runC incorrectly checked mount targets.
An attacker with a malicious container image could possibly mount the host
filesystem into the container and escalate privileges. (CVE-2021-30465)

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
  • runc - 1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm2
    Available with Ubuntu Pro

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

Related notices

  • USN-4297-1: golang-github-opencontainers-runc-dev, runc
  • USN-4960-1: golang-github-opencontainers-runc-dev, runc