Debian DSA-3293-1 : pyjwt - security update

high Nessus Plugin ID 84300

Language:

Synopsis

The remote Debian host is missing a security-related update.

Description

Tim McLean discovered that pyjwt, a Python implementation of JSON Web Token, would try to verify an HMAC signature using an RSA or ECDSA public key as secret. This could allow remote attackers to trick applications expecting tokens signed with asymmetric keys, into accepting arbitrary tokens. For more information see:
https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web
-token-libraries/.

Solution

Upgrade the pyjwt packages.

For the stable distribution (jessie), this problem has been fixed in version 0.2.1-1+deb8u1.

Plugin Details

Severity: High

ID: 84300

File Name: debian_DSA-3293.nasl

Version: 2.9

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 6/22/2015

Updated: 4/2/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Nessus

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:pyjwt, cpe:/o:debian:debian_linux:8.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Patch Publication Date: 6/20/2015

Reference Information

DSA: 3293

Detections

Analytics