Debian: DSA-3293-1: pyjwt security update

Date20 Jun 2015

CategoryDebian Linux Distribution - Security Advisories

162

Posted ByLinuxSecurity Advisories

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


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Debian Security Advisory DSA-3293-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
https://www.debian.org/security/                       Alessandro Ghedini
June 20, 2015                         https://www.debian.org/security/faq
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Package        : pyjwt
Debian Bug     : 781640

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/

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

For the unstable distribution (sid), this problem will be fixed soon.

We recommend that you upgrade your pyjwt packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

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