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AUSCERT External Security Bulletin Redistribution
USN-3520-1: PySAML2 vulnerability
9 January 2018
AusCERT Security Bulletin Summary
Operating System: Ubuntu
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Unauthorised Access -- Remote/Unauthenticated
CVE Names: CVE-2017-1000433
Comment: This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running python-pysaml2 check for an updated version of the software
for their operating system.
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USN-3520-1: PySAML2 vulnerability
Ubuntu Security Notice USN-3520-1
8th January, 2018
A security issue affects these releases of Ubuntu and its derivatives:
Ubuntu 16.04 LTS
PySAML2 could allow authentication without a password.
python-pysaml2 - Pure python implementation of SAML2
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 version:
Ubuntu 16.04 LTS:
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.
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