CVE-2024-45409

CRITICAL 2 PoCs

INFO Priority: 1.25 BB Relevance: 92/100

Published: 2024-09-10 Modified: 2026-11-04 First seen: 2026-11-03 Status: active

Attack Surface

Network Low Complexity No Auth No Interaction Conf. Impact Integ. Impact Scope Change

CVSS Vector Breakdown

AV: Network

AC: Low

PR: None

UI: None

S: Changed

C: High

I: High

A: None

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.

Weakness Classification (1)

CWE-347 — CWE-347: Improper Verification of Cryptographic Signature

Affected Software (9)

Vendor	Product	Version
SAML-Toolkits	ruby-saml	< 1.12.3
SAML-Toolkits	ruby-saml	>= 1.13.0, < 1.17.0
SAML-Toolkits	ruby-saml	< 1.12.3
SAML-Toolkits	ruby-saml	>= 1.13.0, < 1.17.0
gitlab	gitlab	< 16.11.10
omniauth	omniauth_saml	< 1.10.3
omniauth	omniauth_saml	2.0.0
omniauth	omniauth_saml	2.1.0
onelogin	ruby-saml	< 1.12.3