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USN-4308-1: Twisted vulnerabilities

19 March 2020

Several security issues were fixed in Twisted.

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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,
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)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

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

Ubuntu 19.10
Ubuntu 18.04
Ubuntu 16.04

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

References

Related notices

  • USN-4308-2: twisted, python-twisted, python-twisted-bin, python-twisted-mail, python-twisted-web, twisted-doc, python-twisted-lore, python-twisted-news, python-twisted-core, python-twisted-words, python-twisted-runner, python-twisted-conch, python-twisted-names
  • USN-4866-1: netty, libnetty-java

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Further reading