USN-4308-2: Twisted vulnerabilities

30 March 2020

twisted vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 14.04 ESM


Several security issues were fixed in Twisted.

Software Description

  • twisted - Event-based framework for internet applications


USN-4308-1 fixed several vulnerabilities in Twisted. This update provides the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

it was discovered that Twisted incorrectly validated or sanitized certain URIs or HTTP methods. A remote attacker could use this issue to inject invalid characters and possibly perform header injection attacks. (CVE-2019-12387)

It was discovered that Twisted incorrectly verified XMPP TLS certificates. A remote attacker could possibly use this issue to perform a man-in-the-middle attack and obtain sensitive information. (CVE-2019-12855)

Jake Miller and ZeddYu Lu discovered that Twisted incorrectly handled certain content-length headers. A remote attacker could possibly use this issue to perform HTTP request splitting attacks. (CVE-2020-10108, CVE-2020-10109)

Update instructions

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

Ubuntu 14.04 ESM
python-twisted - 13.2.0-1ubuntu1.2+esm1
python-twisted-bin - 13.2.0-1ubuntu1.2+esm1
python-twisted-web - 13.2.0-1ubuntu1.2+esm1

To update your system, please follow these instructions:

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