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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)

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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 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.

References

Related notices

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

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Further reading