1. Ubuntu Security Notices
  2. USN-6473-1

USN-6473-1: urllib3 vulnerabilities

Publication date

7 November 2023

Overview

Several security issues were fixed in urllib3.

Releases

Packages

Details

It was discovered that urllib3 didn’t strip HTTP Authorization header
on cross-origin redirects. A remote attacker could possibly use this
issue to obtain sensitive information. This issue only affected
Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2018-25091)

It was discovered that urllib3 didn’t strip HTTP Cookie header on
cross-origin redirects. A remote attacker could possibly use this
issue to obtain sensitive information. (CVE-2023-43804)

It was discovered that urllib3 didn’t strip HTTP body on status code
303 redirects under certain circumstances. A remote attacker could
possibly use this issue to obtain sensitive information. (CVE-2023-45803)

It was discovered that urllib3 didn’t strip HTTP Authorization header
on cross-origin redirects. A remote attacker could possibly use this
issue to obtain sensitive information. This issue only affected
Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. (CVE-2018-25091)

It was discovered that urllib3 didn’t strip HTTP Cookie header on
cross-origin redirects. A remote attacker could possibly use this
issue to obtain sensitive information. (CVE-2023-43804)

It was discovered that urllib3 didn’t strip HTTP body on status code
303 redirects under certain circumstances. A remote attacker could
possibly use this issue to obtain sensitive information. (CVE-2023-45803)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
23.10 mantic python3-urllib3 –  1.26.16-1ubuntu0.1
23.04 lunar python3-urllib3 –  1.26.12-1ubuntu0.1
22.04 jammy python3-urllib3 –  1.26.5-1~exp1ubuntu0.1
20.04 focal python3-urllib3 –  1.25.8-2ubuntu0.3
18.04 bionic python-urllib3 –  1.22-1ubuntu0.18.04.2+esm1  
python3-urllib3 –  1.22-1ubuntu0.18.04.2+esm1  
16.04 xenial python-urllib3 –  1.13.1-2ubuntu0.16.04.4+esm1  
python3-urllib3 –  1.13.1-2ubuntu0.16.04.4+esm1  

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.

Get Ubuntu Pro

References

Have additional questions?

Talk to a member of the team ›