The SimpleSAMLphp SAML2 library is a PHP library for SAML2 related functionality. Prior to versions 4.17.0 and 5.0.0-alpha.20, there is a signature confusion attack in the HTTPRedirect binding. An attacker with any signed SAMLResponse via the HTTP-Redirect binding can cause the application to accept an unsigned message. Versions 4.17.0 and 5.0.0-alpha.20 contain a fix for the issue.
History

Tue, 11 Mar 2025 20:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 11 Mar 2025 19:15:00 +0000

Type Values Removed Values Added
Description The SimpleSAMLphp SAML2 library is a PHP library for SAML2 related functionality. Prior to versions 4.17.0 and 5.0.0-alpha.20, there is a signature confusion attack in the HTTPRedirect binding. An attacker with any signed SAMLResponse via the HTTP-Redirect binding can cause the application to accept an unsigned message. Versions 4.17.0 and 5.0.0-alpha.20 contain a fix for the issue.
Title SimpleSAMLphp SAML2 library has incorrect signature verification for HTTP-Redirect binding
Weaknesses CWE-347
References
Metrics cvssV3_1

{'score': 8.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2025-03-11T19:27:00.852Z

Reserved: 2025-03-06T18:06:54.460Z

Link: CVE-2025-27773

cve-icon Vulnrichment

Updated: 2025-03-11T19:26:53.207Z

cve-icon NVD

Status : Received

Published: 2025-03-11T19:15:43.677

Modified: 2025-03-11T19:15:43.677

Link: CVE-2025-27773

cve-icon Redhat

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