High, CVSS 8.3PyPIAmendedPublished
Python-saml allows manipulation of SAML data without invalidation of cryptographic signature
CVE-2017-11427 · GHSA-j8j8-348v-wfm3
- Affected
- PyPI python-saml < 2.4.0
- Fixed in
- 2.4.0· Vendor fix available
- Issue
- 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.
Recommended action: Upgrade to 2.4.0 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.