Ubuntu 24.04 LTS: USN-6787-1 Moderate: Jinja2 XSS Security Alert

ubuntu

May 29, 2024

Jinja2 could allow cross-site scripting (XSS) attacks.

Summary

Jinja2 could allow cross-site scripting (XSS) attacks.

Software Description:

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

Details:

It was discovered that Jinja2 incorrectly handled certain HTML attributes

that were accepted by the xmlattr filter. An attacker could use this issue

to inject arbitrary HTML attribute keys and values to potentially execute

a cross-site scripting (XSS) attack.

Topics Covered

security advisory software update ubuntu xss threat jinja2

Update Instructions

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

Ubuntu 24.04 LTS
    python3-jinja2                  3.1.2-1ubuntu1.1

Ubuntu 23.10
    python3-jinja2                  3.1.2-1ubuntu0.23.10.2

Ubuntu 22.04 LTS
    python3-jinja2                  3.0.3-1ubuntu0.2

Ubuntu 20.04 LTS
    python-jinja2                   2.10.1-2ubuntu0.3
    python3-jinja2                  2.10.1-2ubuntu0.3

Ubuntu 18.04 LTS
    python-jinja2                   2.10-1ubuntu0.18.04.1+esm2
                                    Available with Ubuntu Pro
    python3-jinja2                  2.10-1ubuntu0.18.04.1+esm2
                                    Available with Ubuntu Pro

Ubuntu 16.04 LTS
    python-jinja2                   2.8-1ubuntu0.1+esm3
                                    Available with Ubuntu Pro
    python3-jinja2                  2.8-1ubuntu0.1+esm3
                                    Available with Ubuntu Pro

Ubuntu 14.04 LTS
    python-jinja2                   2.7.2-2ubuntu0.1~esm3
                                    Available with Ubuntu Pro
    python3-jinja2                  2.7.2-2ubuntu0.1~esm3
                                    Available with Ubuntu Pro

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