1. Ubuntu Security Notices
  2. USN-5066-2

USN-5066-2: PySAML2 vulnerability

Publication date

8 September 2021

Overview

PySAML2 could be made to accept invalid SAML documents.

Releases

Packages

Details

USN-5066-1 fixed a vulnerability in PySAML2. This update provides
the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

Brian Wolff discovered that PySAML2 incorrectly validated cryptographic
signatures. A remote attacker could possibly use this issue to alter SAML
documents.

USN-5066-1 fixed a vulnerability in PySAML2. This update provides
the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

Brian Wolff discovered that PySAML2 incorrectly validated cryptographic
signatures. A remote attacker could possibly use this issue to alter SAML
documents.

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
16.04 xenial python-pysaml2 –  3.0.0-3ubuntu1.16.04.4+esm1  
python3-pysaml2 –  3.0.0-3ubuntu1.16.04.4+esm1  

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References

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