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PYSEC-2019-198

Quick fix

PYSEC-2019-198 — python-saml: upgrade to the fixed version with the command below.

pip install --upgrade 'python-saml>=2.4.0'

Details

OneLogin PythonSAML 2.3.0 and earlier may incorrectly utilize the results of XML DOM traversal and canonicalization APIs in such a way that an attacker may be able to manipulate the SAML data without invalidating the cryptographic signature, allowing the attack to potentially bypass authentication to SAML service providers.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/python-saml

Introduced in: 0Fixed in: 2.4.0

Fixpip install --upgrade 'python-saml>=2.4.0'

References

https://www.kb.cert.org/vuls/id/475445[WEB]
https://duo.com/blog/duo-finds-saml-vulnerabilities-affecting-multiple-implementations[ARTICLE]
https://github.com/advisories/GHSA-j8j8-348v-wfm3[ADVISORY]