USN-5526-2: PyJWT regression

Releases

• Ubuntu 22.04 LTS

Packages

• pyjwt - Python 3 implementation of JSON Web Token

Details

USN-5526-1 fixed vulnerabilities in PyJWT. Unfortunately this caused a
regression by incrementing the internal package version number on Ubuntu
22.04 LTS. This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

Aapo Oksman discovered that PyJWT incorrectly handled signatures
constructed from SSH public keys. A remote attacker could use this to forge
a JWT signature.

Update instructions

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

Ubuntu 22.04

• python3-jwt - 2.3.0-1ubuntu0.2

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

References

• https://launchpad.net/bugs/1986487