USN-5066-2: PySAML2 vulnerability
8 September 2021
PySAML2 could be made to accept invalid SAML documents.
Releases
Packages
- python-pysaml2 - Pure python implementation of SAML2
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.
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 16.04
-
python-pysaml2
-
3.0.0-3ubuntu1.16.04.4+esm1
Available with Ubuntu Pro
-
python3-pysaml2
-
3.0.0-3ubuntu1.16.04.4+esm1
Available with Ubuntu Pro
In general, a standard system update will make all the necessary changes.
References
Related notices
- USN-5066-1: python3-pysaml2, python-pysaml2-doc, python-pysaml2