USN-3520-1: PySAML2 vulnerability
Ubuntu Security Notice USN-3520-1
8th January, 2018
python-pysaml2 vulnerability
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 17.10
- Ubuntu 17.04
- Ubuntu 16.04 LTS
Summary
PySAML2 could allow authentication without a password.
Software description
- python-pysaml2
– Pure python implementation of SAML2
Details
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.
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 17.10:
-
python-pysaml2
3.0.0-3ubuntu2.2
-
python3-pysaml2
3.0.0-3ubuntu2.2
- Ubuntu 17.04:
-
python-pysaml2
3.0.0-3ubuntu1.17.04.3
-
python3-pysaml2
3.0.0-3ubuntu1.17.04.3
- Ubuntu 16.04 LTS:
-
python-pysaml2
3.0.0-3ubuntu1.16.04.3
-
python3-pysaml2
3.0.0-3ubuntu1.16.04.3
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.
References
Source: USN-3520-1: PySAML2 vulnerability
