CVE-2025-54572: fallo de gravedad media en SAML-Toolkits ruby-saml
Ruby SAML DOS vulnerability with large SAML response
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 6.9epss 0.5%
The Ruby SAML library is for implementing the client side of a SAML authorization. In versions 1.18.0 and below, a denial-of-service vulnerability exists in ruby-saml even with the message_max_bytesize setting configured. The vulnerability occurs because the SAML response is validated for Base64 format prior to checking the message size, leading to potential resource exhaustion. This is fixed in version 1.18.1.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Productos afectados
SAML-Toolkits · ruby-samlCVEs relacionadas — SAML-Toolkits ruby-saml
En el mismo producto, de las más peligrosas a las menos.
CVE-2025-25292CRITICALRuby SAML vulnerable to SAML authentication bypass due to namespace handling (parser differential)EPSS 65.1%CVE-2025-25291CRITICALruby-saml vulnerable to SAML authentication bypass due to DOCTYPE handling (parser differential)EPSS 21.0%CVE-2024-45409CRITICALThe Ruby SAML library vulnerable to a SAML authentication bypass via Incorrect XPath selectorEPSS 12.5%CVE-2025-25293HIGHruby-saml vulnerable to Remote Denial of Service (DoS) with compressed SAML responsesEPSS 1.5%CVE-2025-66567CRITICALruby-saml has a SAML authentication bypass due to namespace handling (parser differential)EPSS 0.4%CVE-2025-66568CRITICALruby-saml Libxml2 Canonicalization errors can bypass Digest/Signature validationEPSS 0.3%
Referencias
https://github.com/SAML-Toolkits/ruby-saml/commit/38ef5dd1ce17514e202431f569c4f5633e6c2709https://github.com/SAML-Toolkits/ruby-saml/pull/770https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.1https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-rrqh-93c8-j966https://lists.debian.org/debian-lts-announce/2025/09/msg00001.html