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USN-3407-1: PyJWT vulnerability

30 August 2017

PyJWT could be made to crash if it received specially crafted input.

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Releases

Packages

  • pyjwt - Python implementation of JSON Web Token

Details

It was discovered that a vulnerability in PyJWT doesn't check
invalid_strings properly for some public keys. A remote attacker
could take advantage of a key confusion to craft JWTs from scratch.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 17.04
Ubuntu 16.04

In general, a standard system update will make all the necessary changes.

References

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Further reading