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Open-source package vulnerability · Go

CVE-2024-47832: SSOReady has an XML Signature Bypass via differential XML parsing

criticalCVSS 4.0 9.3 · 3.1 9.8GHSA-j2hr-q93x-gxvh

Affected versions are vulnerable to XML signature bypass attacks. An attacker can carry out signature bypass if you have access to certain IDP-signed messages. The underlying mechanism exploits differential behavior between XML parsers. Users of https://ssoready.com, the public hosted instance of SSOReady, are unaffected. We advise folks who self-host SSOReady to upgrade to 7f92a06 or later.

Published Oct 11, 2024

Affected packages

github.com/ssoready/ssoready

Ecosystem
Go
Affected
< 0.0.0-20241009153838-7f92a0630439
Fixed in
0.0.0-20241009153838-7f92a0630439
Check
go list -m github.com/ssoready/ssoready

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Affected versions are vulnerable to XML signature bypass attacks. An attacker can carry out signature bypass if you have access to certain IDP-signed messages. The underlying mechanism exploits differential behavior between XML parsers.

Users of https://ssoready.com, the public hosted instance of SSOReady, are unaffected. We advise folks who self-host SSOReady to upgrade to 7f92a06 or later. Do so by updating your SSOReady Docker images from sha-... to sha-7f92a06. The documentation for self-hosting SSOReady is available here.

Vulnerability was discovered by @ahacker1-securesaml. It's likely the precise mechanism of attack affects other SAML implementations, so the reporter and I (@ucarion) have agreed to not disclose it in detail publicly at this time.

Credited to ahacker1-securesaml.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology