1. Ubuntu Security Notices
  2. USN-4308-1

USN-4308-1: Twisted vulnerabilities

Publication date

19 March 2020

Overview

Several security issues were fixed in Twisted.

Releases

Packages

  • 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
machine-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,

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
machine-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

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
19.10 eoan python-twisted –  18.9.0-3ubuntu1.1
python-twisted-bin –  18.9.0-3ubuntu1.1
python-twisted-web –  18.9.0-3ubuntu1.1
python3-twisted –  18.9.0-3ubuntu1.1
python3-twisted-bin –  18.9.0-3ubuntu1.1
18.04 bionic python-twisted –  17.9.0-2ubuntu0.1
python-twisted-bin –  17.9.0-2ubuntu0.1
python-twisted-web –  17.9.0-2ubuntu0.1
python3-twisted –  17.9.0-2ubuntu0.1
python3-twisted-bin –  17.9.0-2ubuntu0.1
16.04 xenial python-twisted –  16.0.0-1ubuntu0.4
python-twisted-bin –  16.0.0-1ubuntu0.4
python-twisted-web –  16.0.0-1ubuntu0.4
python3-twisted –  16.0.0-1ubuntu0.4

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References

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