USN-4308-1: Twisted vulnerabilities

twisted vulnerabilities

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

• Ubuntu 19.10


• Ubuntu 18.04 LTS


• Ubuntu 16.04 LTS

Summary

Several security issues were fixed in Twisted.

Software Description

• twisted - Event-based framework for internet applications

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)

It was discovered that Twisted incorrectly handled HTTP/2 connections. A
remote attacker could possibly use this issue to cause Twisted to hang or
consume resources, leading to a denial of service. This issue only affected
Ubuntu 18.04 LTS and Ubuntu 19.10. (CVE-2019-9512, CVE-2019-9514,
CVE-2019-9515)

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 19.10

Ubuntu 18.04 LTS

Ubuntu 16.04 LTS

To update your system, please follow these instructions: