USN-3407-1: PyJWT vulnerability
USN-3407-1: PyJWT vulnerability Ubuntu Security Notice USN-3407-1 30th August, 2017 pyjwt vulnerability A security issue affects these releases of Ubuntu and its derivatives: Ubuntu 17.04 Ubuntu 16.04 LTS Summary PyJWT could be made to crash if it received specially crafted input. Software description pyjwt – Python implementation of JSON Web Token Details It was discovered that a vulnerability in PyJWT doesn't checkinvalid_strings properly for some public keys. A remote attackercould take advantage of a key confusion to craft JWTs from scratch. Update instructions The problem can be corrected by updating your system to the following package version: Ubuntu 17.04: python-jwt 1.4.2-1ubuntu0.1 python3-jwt 1.4.2-1ubuntu0.1 Ubuntu 16.04 LTS: python-jwt 1.3.0-1ubuntu0.1 python3-jwt 1.3.0-1ubuntu0.1 To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades. In general, a standard system update will make all the necessary changes. References CVE-2017-11424 Source: USN-3407-1: PyJWT vulnerability