GHSA-4vc4-m8qh-g8jm
Suggest an improvement- Source
- https://github.com/advisories/GHSA-4vc4-m8qh-g8jm
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-4vc4-m8qh-g8jm/GHSA-4vc4-m8qh-g8jm.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-4vc4-m8qh-g8jm
- Aliases
- Related
- Published
- 2025-03-12T20:20:24Z
- Modified
- 2025-09-13T05:15:49.452444Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- 9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
- Summary
- Ruby SAML allows a SAML authentication bypass due to DOCTYPE handling (parser differential)
- Details
-
Summary
An authentication bypass vulnerability was found in ruby-saml due to a parser differential. ReXML and Nokogiri parse XML differently, the parsers can generate entirely different document structures from the same XML input. That allows an attacker to be able to execute a Signature Wrapping attack.
Impact
This issue may lead to authentication bypass.
- Database specific
{ "nvd_published_at": "2025-03-12T21:15:42Z", "severity": "CRITICAL", "cwe_ids": [ "CWE-347", "CWE-436" ], "github_reviewed": true, "github_reviewed_at": "2025-03-12T20:20:24Z" }- References
-
- https://github.com/SAML-Toolkits/ruby-saml/security/advisories/GHSA-4vc4-m8qh-g8jm
- https://github.com/omniauth/omniauth-saml/security/advisories/GHSA-hw46-3hmr-x9xv
- https://nvd.nist.gov/vuln/detail/CVE-2025-25291
- https://github.com/SAML-Toolkits/ruby-saml/commit/e76c5b36bac40aedbf1ba7ffaaf495be63328cd9
- https://github.com/SAML-Toolkits/ruby-saml/commit/e9c1cdbd0f9afa467b585de279db0cbd0fb8ae97
- https://about.gitlab.com/releases/2025/03/12/patch-release-gitlab-17-9-2-released
- https://github.blog/security/sign-in-as-anyone-bypassing-saml-sso-authentication-with-parser-differentials
- https://github.com/SAML-Toolkits/ruby-saml
- https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.12.4
- https://github.com/SAML-Toolkits/ruby-saml/releases/tag/v1.18.0
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/ruby-saml/CVE-2025-25291.yml
- https://news.ycombinator.com/item?id=43374519
- https://portswigger.net/research/saml-roulette-the-hacker-always-wins
- https://security.netapp.com/advisory/ntap-20250314-0010
- https://securitylab.github.com/advisories/GHSL-2024-329_GHSL-2024-330_ruby-saml
Affected packages
RubyGems / ruby-saml
Package
- Name
- ruby-saml
- Purl
- pkg:gem/ruby-saml
Affected ranges
- Type
- ECOSYSTEM
- Events
-
Introduced0Unknown introduced version / All previous versions are affectedFixed1.12.4
Affected versions
0.*
0.0.5
0.0.6
0.0.7
0.0.8
0.2.1
0.2.2
0.2.3
0.3.0
0.3.1
0.3.2
0.3.3
0.3.4
0.4.0
0.4.1
0.4.2
0.4.3
0.4.4
0.4.5
0.4.6
0.4.7
0.5.0
0.5.1
0.5.2
0.5.3
0.6.0
0.7.0
0.7.1
0.7.2
0.7.3
0.8.0
0.8.1
0.8.2
0.8.3
0.8.4
0.8.5
0.8.6
0.8.7
0.8.8
0.8.9
0.8.10
0.8.11
0.8.12
0.8.13
0.8.14
0.8.15
0.8.16
0.8.17
0.8.18
0.9
0.9.1
0.9.2
0.9.3
0.9.4
1.*
1.0.0
1.1.0
1.1.1
1.1.2
1.2.0
1.3.0
1.3.1
1.4.0
1.4.1
1.4.2
1.4.3
1.5.0
1.6.0
1.6.1
1.6.2
1.7.0
1.7.1
1.7.2
1.8.0
1.9.0
1.10.0
1.10.1
1.10.2
1.11.0
1.12.0
1.12.1
1.12.2
1.12.3
RubyGems / ruby-saml
Package
- Name
- ruby-saml
- Purl
- pkg:gem/ruby-saml