Ubuntu 20.10: 4666-1 Moderate: Lxml Cross-Site Scripting Risk

ubuntu

December 9, 2020

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

Summary

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

Software Description:

- lxml: pythonic binding for the libxml2 and libxslt libraries

Details:

It was discovered that lxml incorrectly handled certain HTML.

An attacker could possibly use this issue to cross-site scripting (XSS) attacks.

Topics Covered

security advisory moderate security issue cross-site scripting ubuntu lxml

Update Instructions

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

Ubuntu 20.10:
  python3-lxml                    4.5.2-1ubuntu0.1

Ubuntu 20.04 LTS:
  python-lxml                     4.5.0-1ubuntu0.1
  python3-lxml                    4.5.0-1ubuntu0.1

Ubuntu 18.04 LTS:
  python-lxml                     4.2.1-1ubuntu0.2
  python3-lxml                    4.2.1-1ubuntu0.2

Ubuntu 16.04 LTS:
  python-lxml                     3.5.0-1ubuntu0.2
  python3-lxml                    3.5.0-1ubuntu0.2

Ubuntu 14.04 ESM:
  python-lxml                     3.3.3-1ubuntu0.2+esm1
  python3-lxml                    3.3.3-1ubuntu0.2+esm1

Ubuntu 12.04 ESM:
  python-lxml                     2.3.2-1ubuntu0.4
  python3-lxml                    2.3.2-1ubuntu0.4

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