USN-4885-1: Pygments vulnerability

Releases

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

Packages

• pygments - Generic syntax highlighter

Details

It was discovered that Pygments incorrectly handled parsing SML files. If a
user or automated system were tricked into parsing a specially crafted SML
file, a remote attacker could cause Pygments to hang, 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-4ubuntu0.1

Ubuntu 20.04

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

Ubuntu 18.04

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

Ubuntu 16.04

• python-pygments - 2.1+dfsg-1ubuntu0.1
• python3-pygments - 2.1+dfsg-1ubuntu0.1

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

References

• CVE-2021-20270

Related notices

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