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Ubuntu Security Notice USN-6599-1

Ubuntu Security Notice USN-6599-1
Posted Jan 26, 2024
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6599-1 - 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. 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.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2020-28493, CVE-2024-22195
SHA-256 | c4598e532c545a8d7a06e60082eca74ab86406a361138570c7495e31b23944fd

Ubuntu Security Notice USN-6599-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-6599-1
January 25, 2024

jinja2 vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)
- Ubuntu 14.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in jinja2.

Software Description:
- jinja2: documentation for the Jinja2 Python library

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)

Update instructions:

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

Ubuntu 23.10:
python3-jinja2 3.1.2-1ubuntu0.23.10.1

Ubuntu 22.04 LTS:
python3-jinja2 3.0.3-1ubuntu0.1

Ubuntu 20.04 LTS:
python-jinja2 2.10.1-2ubuntu0.2
python3-jinja2 2.10.1-2ubuntu0.2

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
python-jinja2 2.10-1ubuntu0.18.04.1+esm1
python3-jinja2 2.10-1ubuntu0.18.04.1+esm1

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
python-jinja2 2.8-1ubuntu0.1+esm2
python3-jinja2 2.8-1ubuntu0.1+esm2

Ubuntu 14.04 LTS (Available with Ubuntu Pro):
python-jinja2 2.7.2-2ubuntu0.1~esm2
python3-jinja2 2.7.2-2ubuntu0.1~esm2

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

References:
https://ubuntu.com/security/notices/USN-6599-1
CVE-2020-28493, CVE-2024-22195

Package Information:
https://launchpad.net/ubuntu/+source/jinja2/3.1.2-1ubuntu0.23.10.1
https://launchpad.net/ubuntu/+source/jinja2/3.0.3-1ubuntu0.1
https://launchpad.net/ubuntu/+source/jinja2/2.10.1-2ubuntu0.2

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