Resource Exhaustion Affecting ruby-saml package, versions <1.11.0-1+deb11u3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-DEBIAN11-RUBYSAML-11339724
- published31 Jul 2025
- disclosed30 Jul 2025
Introduced: 30 Jul 2025
CVE-2025-54572 (opens in a new tab)How to fix?
Upgrade Debian:11 ruby-saml to version 1.11.0-1+deb11u3 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream ruby-saml package and not the ruby-saml package as distributed by Debian.
See How to fix? for Debian:11 relevant fixed versions and status.
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.
References
- https://security-tracker.debian.org/tracker/CVE-2025-54572
- https://github.com/SAML-Toolkits/ruby-saml/commit/38ef5dd1ce17514e202431f569c4f5633e6c2709
- https://github.com/SAML-Toolkits/ruby-saml/pull/770
- https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.1
- https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-rrqh-93c8-j966
- https://lists.debian.org/debian-lts-announce/2025/09/msg00001.html