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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)

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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 19.10
Ubuntu 18.04

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

References

Related notices

  • USN-4867-1: runc, golang-github-opencontainers-runc-dev
  • USN-6088-2: runc, golang-github-opencontainers-runc-dev

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Further reading