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GHSA-j2jp-wvqg-wc2g: crewjam/saml vulnerable to signature bypass via multiple Assertion elements due to improper authentication

Impact

The crewjam/saml go library is vulnerable to an authentication bypass when processing SAML responses containing multiple Assertion elements.

Patches

This issue has been corrected in version 0.4.9

Credit

This issue was reported by Felix Wilhelm from Google Project Zero.

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crewjam/saml vulnerable to signature bypass via multiple Assertion elements due to improper authentication

Critical severity GitHub Reviewed Published Nov 29, 2022 in crewjam/saml • Updated Nov 29, 2022

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CVE-2022-41912: Merge pull request from GHSA-j2jp-wvqg-wc2g · crewjam/saml@aee3fb1

The crewjam/saml go library prior to version 0.4.9 is vulnerable to an authentication bypass when processing SAML responses containing multiple Assertion elements. This issue has been corrected in version 0.4.9. There are no workarounds other than upgrading to a fixed version.

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