PySAML2 could allow authentication without a password.
It was discovered that PySAML2 incorrectly accepted any password when run with python optimizations enabled. An attacker could use this issue to authenticate as any user without a valid password.
8 January 2018
A security issue affects these releases of Ubuntu and its derivatives:
PySAML2 could allow authentication without a password.
It was discovered that PySAML2 incorrectly accepted any password when run with python optimizations enabled. An attacker could use this issue to authenticate as any user without a valid password.
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.