Ubuntu 20.10 USN-4897-1 Pygments Denial Of Service Risk

ubuntu

March 30, 2021

Pygments could be made to hang if it opened a specially crafted file.

Summary

Pygments could be made to hang if it opened a specially crafted file.

Software Description:

- pygments: Generic syntax highlighter

Details:

Ben Caller discovered that Pygments incorrectly handled parsing certain

files. If a user or automated system were tricked into parsing a specially

crafted file, a remote attacker could cause Pygments to hang or consume

resources, resulting in a denial of service.

Topics Covered

security advisory denial of service ubuntu resource exhaustion pygments

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.10:
  python3-pygments                2.3.1+dfsg-4ubuntu0.2

Ubuntu 20.04 LTS:
  python-pygments                 2.3.1+dfsg-1ubuntu2.2
  python3-pygments                2.3.1+dfsg-1ubuntu2.2

Ubuntu 18.04 LTS:
  python-pygments                 2.2.0+dfsg-1ubuntu0.2
  python3-pygments                2.2.0+dfsg-1ubuntu0.2

Ubuntu 16.04 LTS:
  python-pygments                 2.1+dfsg-1ubuntu0.2
  python3-pygments                2.1+dfsg-1ubuntu0.2

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