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USN-6599-1: Jinja2 vulnerabilities

25 January 2024

Several security issues were fixed in jinja2.

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Releases

Packages

  • jinja2 - small but fast and easy to use stand-alone template engine

Details

Yeting Li discovered that Jinja incorrectly handled certain regex.
An attacker could possibly use this issue to cause a denial of service.
This issue only affected Ubuntu 14.04 LTS, Ubuntu 18.04 LTS, and
Ubuntu 20.04 LTS. (CVE-2020-28493)

It was discovered that Jinja incorrectly handled certain HTML passed with
xmlatter filter. An attacker could inject arbitrary HTML attributes
keys and values potentially leading to XSS. (CVE-2024-22195)

Reduce your security exposure

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.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 23.10
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04
Ubuntu 16.04
Ubuntu 14.04

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

Related notices

  • USN-5701-1: jinja2, python-jinja2-doc, python-jinja2, python3-jinja2