CVE-2017-1000433 pysaml2 Improper Authentication vulnerability

What is CVE-2017-1000433?

CVE-2017-1000433 is a high-severity authentication bypass vulnerability in Debian Debian Linux, published on 2 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

pysaml2 version 4.4.0 and older accept any password when run with python optimizations enabled. This allows attackers to log in as any user without knowing their password.

Weakness: CWE-287

Which versions are affected by CVE-2017-1000433?

3 open source packages ship an affected version, including pysaml2. It affects 2 products.

Products include Debian Debian Linux, Pysaml2 Project Pysaml2.

How do I fix CVE-2017-1000433?

Upgrade pysaml2 to 4.5.0 or later.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2017-1000433 being exploited?

There is no known exploitation of CVE-2017-1000433 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2017-1000433, DLA-1410-1, GHSA-924m-4pmx-c67h, PYSEC-2018-48, SUSE-SU-2018:1194-1, UBUNTU-CVE-2017-1000433 and 1 more.