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USN-6673-1: python-cryptography vulnerabilities

4 March 2024

Several security issues were fixed in python-cryptography.

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Releases

Packages

Details

Hubert Kario discovered that python-cryptography incorrectly handled
errors returned by the OpenSSL API when processing incorrect padding in
RSA PKCS#1 v1.5. A remote attacker could possibly use this issue to expose
confidential or sensitive information. (CVE-2023-50782)

It was discovered that python-cryptography incorrectly handled memory
operations when processing mismatched PKCS#12 keys. A remote attacker could
possibly use this issue to cause python-cryptography to crash, leading to a
denial of service. This issue only affected Ubuntu 23.10. (CVE-2024-26130)

Reduce your security exposure

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.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 23.10
Ubuntu 22.04
Ubuntu 20.04
Ubuntu 18.04

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

Related notices

  • USN-6673-2: python-cryptography, python3-cryptography, python-cryptography-doc