Ubuntu 5526-2: PyJWT regression | LinuxSecurity.com
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Ubuntu Security Notice USN-5526-2
August 17, 2022

pyjwt regression
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 22.04 LTS

Summary:

USN-5526-1 introduced a regression in PyJWT.

Software Description:
- pyjwt: Python 3 implementation of JSON Web Token

Details:

USN-5526-1 fixed vulnerabilities in PyJWT. Unfortunately this caused a
regression by incrementing the internal package version number on Ubuntu
22.04 LTS.  This update fixes the problem.

We apologize for the inconvenience.

Original advisory details:

 Aapo Oksman discovered that PyJWT incorrectly handled signatures
 constructed from SSH public keys. A remote attacker could use this to forge
 a JWT signature.

Update instructions:

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

Ubuntu 22.04 LTS:
  python3-jwt                     2.3.0-1ubuntu0.2

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

References:
  https://ubuntu.com/security/notices/USN-5526-2
  https://ubuntu.com/security/notices/USN-5526-1
  https://launchpad.net/bugs/1986487

Package Information:
  https://launchpad.net/ubuntu/+source/pyjwt/2.3.0-1ubuntu0.2

Ubuntu 5526-2: PyJWT regression

August 17, 2022

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 22.04 LTS Summary: USN-5526-1 introduced a regression in PyJWT. Software Description: - pyjwt: Python 3 implementation of JSON Web Token Details: USN-5526-1 fixed vulnerabilities in PyJWT. Unfortunately this caused a regression by incrementing the internal package version number on Ubuntu 22.04 LTS. This update fixes the problem. We apologize for the inconvenience. Original advisory details: Aapo Oksman discovered that PyJWT incorrectly handled signatures constructed from SSH public keys. A remote attacker could use this to forge a JWT signature.

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 22.04 LTS: python3-jwt 2.3.0-1ubuntu0.2 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-5526-2

https://ubuntu.com/security/notices/USN-5526-1

https://launchpad.net/bugs/1986487

Severity
Ubuntu Security Notice USN-5526-2

Package Information

https://launchpad.net/ubuntu/+source/pyjwt/2.3.0-1ubuntu0.2

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