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Debian DSA-3293-1 : pyjwt - security update

high Nessus Plugin ID 84300

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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.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=781640

https://packages.debian.org/source/jessie/pyjwt

https://www.debian.org/security/2015/dsa-3293

http://www.nessus.org/u?085aa340

Plugin Details

Severity: High

ID: 84300

File Name: debian_DSA-3293.nasl

Version: 2.9

Type: Local

Agent: unix

Published: 6/22/2015

Updated: 4/2/2025

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Vulnerability Information

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

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

Patch Publication Date: 6/20/2015

Reference Information

DSA: 3293