urllib3 could be used to perform a CRLF injection if it received a specially crafted request.
USN-3990-1 fixed a vulnerability in urllib3. This update provides the corresponding update for Ubuntu 14.04 ESM.
29 July 2019
A security issue affects these releases of Ubuntu and its derivatives:
urllib3 could be used to perform a CRLF injection if it received a specially crafted request.
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)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.