USN-4897-1: Pygments vulnerability

Releases

• Ubuntu 20.10
• Ubuntu 20.04 LTS
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• 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.

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

• python-pygments - 2.3.1+dfsg-1ubuntu2.2
• python3-pygments - 2.3.1+dfsg-1ubuntu2.2

Ubuntu 18.04

• python-pygments - 2.2.0+dfsg-1ubuntu0.2
• python3-pygments - 2.2.0+dfsg-1ubuntu0.2

Ubuntu 16.04

• 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.

References

• CVE-2021-27291

Related notices

• USN-4897-2: python-pygments, python3-pygments, pygments