1. Ubuntu Security Notices
  2. USN-3990-2

USN-3990-2: urllib3 vulnerability

Publication date

29 July 2019

Overview

urllib3 could be used to perform a CRLF injection if it received a specially crafted request.

Releases

Packages

  • python-urllib3 - HTTP library with thread-safe connection pooling for Python

Details

USN-3990-1 fixed a vulnerability in urllib3. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that urllib3 incorrectly stripped certain characters from
requests. A remote attacker could use this issue to perform CRLF injection.
(CVE-2019-11236)

USN-3990-1 fixed a vulnerability in urllib3. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

It was discovered that urllib3 incorrectly stripped certain characters from
requests. A remote attacker could use this issue to perform CRLF injection.
(CVE-2019-11236)

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
14.04 trusty python-urllib3 –  1.7.1-1ubuntu4.1+esm1
python3-urllib3 –  1.7.1-1ubuntu4.1+esm1

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References

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