CVE-2022-41912

crewjam/saml go library is vulnerable to signature bypass via multiple Assertion elements

CVSS 9.1 CRITICALEPSS 2.2%CWE-287

Vexday Risk Score

48Attention

SSVC decision (CISA)

Attend

PoC available → attend closely

CVSS 9.1EPSS 2.2%KEV nãoPoC públicaNuclei —Metasploit —Patch —

Lifecycle

28 Nov 2022Published on NVD

Recommendation: Plan a near-term fix — a public PoC already exists.

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

crewjam · saml

public PoCs found — 1

cve_referencepacketstormsecurity.com/files/170356/crewjam-saml-Signature-Bypass.htmlunverified

⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.

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References

http://packetstormsecurity.com/files/170356/crewjam-saml-Signature-Bypass.html https://github.com/crewjam/saml/commit/aee3fb1edeeaf1088fcb458727e0fd863d277f8b https://github.com/crewjam/saml/security/advisories/GHSA-j2jp-wvqg-wc2g