========================================================================== Ubuntu Security Notice USN-5526-2 August 17, 2022
pyjwt regression ========================================================================== A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS Summary: USN-5526-1 introduced a regression in PyJWT. Software Description: - 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 LTS: python3-jwt 2.3.0-1ubuntu0.2 In general, a standard system update will make all the necessary changes. References: https://ubuntu.com/security/notices/USN-5526-2 https://ubuntu.com/security/notices/USN-5526-1 https://launchpad.net/bugs/1986487 Package Information: https://launchpad.net/ubuntu/+source/pyjwt/2.3.0-1ubuntu0.2
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