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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)

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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.

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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.

References

Related notices

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

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Further reading