CVE-2024-45409 — The Ruby SAML library vulnerable to a SAML authentication bypass via Incorrect XPath selector

Affected: SAML-Toolkits ruby-saml, onelogin ruby-saml, omniauth-saml

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.

USN-7309-1 — Ruby SAML vulnerabilities

Affected: Ubuntu:Pro:16.04:LTS: ruby-saml, Ubuntu:Pro:18.04:LTS: ruby-saml, Ubuntu:20.04:LTS: ruby-saml, Ubuntu:22.04:LTS: ruby-saml, Ubuntu:24.04:LTS: ruby-saml

It was discovered that Ruby SAML did not properly validate SAML responses. An unauthenticated attacker could use this vulnerability to log in as an abitrary user. This issue only affected Ubuntu 16.04 LTS. (CVE-2016-5697)

It was discovered that Ruby SAML incorrectly utilized the results of XML DOM traversal and canonicalization APIs. An unauthenticated attacker could use this vulnerability to log in as an abitrary user. This issue only affected Ubuntu 16.04 LTS. (CVE-2017-11428)

It was discovered that Ruby SAML did not properly verify the signature of the SAML Response, allowing multiple elements with the same ID. An unauthenticated attacker could use this vulnerability to log in as an abitrary user. (CVE-2024-45409)

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CVE-2024-45409 — The Ruby SAML library vulnerable to a SAML authentication bypass via Incorrect XPath selector

USN-7309-1 — Ruby SAML vulnerabilities