Detections
Analytics
CVE-2024-45409
critical
Description
The Ruby SAML library is for implementing the client side of a SAML authorization. Ruby-SAML in <= 12.2 and 1.13.0 <= 1.16.0 does not properly verify the signature of the SAML Response. An unauthenticated attacker with access to any signed saml document (by the IdP) can thus forge a SAML Response/Assertion with arbitrary contents. This would allow the attacker to log in as arbitrary user within the vulnerable system. This vulnerability is fixed in 1.17.0 and 1.12.3.
References
https://thehackernews.com/2025/03/github-uncovers-new-ruby-saml.html
https://www.darkreading.com/application-security/gitlab-warns-max-severity-authentication-bypass-bug
https://github.com/barkotenicholas/CVE-2024-45409
https://ssoready.com/blog/engineering/ruby-saml-pwned-by-xml-signature-wrapping-attacks/
https://security.netapp.com/advisory/ntap-20240926-0008/
https://news.ycombinator.com/item?id=41586031
https://lists.debian.org/debian-lts-announce/2024/11/msg00006.html
https://github.com/omniauth/omniauth-saml/security/advisories/GHSA-cvp8-5r8g-fhvq
https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-jw9c-mfg7-9rx2
https://github.com/SAML-Toolkits/ruby-saml/commit/4865d030cae9705ee5cdb12415c654c634093ae7
https://github.com/SAML-Toolkits/ruby-saml/commit/1ec5392bc506fe43a02dbb66b68741051c5ffeae
Details
Published: 2024-09-10
Updated: 2026-11-04
Risk Information
CVSS v2
Base Score: 10
Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C
Severity: Critical
CVSS v3
Base Score: 9.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
CVSS v4
Base Score: 9.9
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N
Severity: Critical
EPSS
EPSS: 0.12454