The Ruby SAML library vulnerable to a SAML authentication bypass via Incorrect XPath selector
77Vexday Risk Score
Prioritize patching. It exploitation observed by VulnCheck and has a public proof of concept.
ssvc Actcvss 10epss 11%
from disclosure to weapon27 days
Published on NVDSep 10
1st PoC+27d
VulnCheck+35d
exploitation probability
11%top 5% of all CVEs
observed exploitation
yesVulnCheck
2 public exploit(s)
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Affected products
SAML-Toolkits · ruby-samlpublic PoCs found — 2
githubgithub.com/synacktiv/CVE-2024-45409★ 83vulncheckvulncheck.com/xdb/bbbf2dd62a91unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://github.com/omniauth/omniauth-saml/security/advisories/GHSA-cvp8-5r8g-fhvqhttps://github.com/SAML-Toolkits/ruby-saml/commit/1ec5392bc506fe43a02dbb66b68741051c5ffeaehttps://github.com/SAML-Toolkits/ruby-saml/commit/4865d030cae9705ee5cdb12415c654c634093ae7https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-jw9c-mfg7-9rx2https://lists.debian.org/debian-lts-announce/2024/11/msg00006.htmlhttps://news.ycombinator.com/item?id=41586031https://security.netapp.com/advisory/ntap-20240926-0008/https://ssoready.com/blog/engineering/ruby-saml-pwned-by-xml-signature-wrapping-attacks/