simplesamlphp: The SimpleSAMLphp SAML2 library is a PHP library for SAML2 related functionality
CVE-2025-27773 is fixed in simplesamlphp on 1 platform, first by simplesamlphp 1.15.3-1ubuntu0.1~esm1, released March 11, 2025. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| simplesamlphp · Debian 11.6 (bullseye) | 1.19.0-1+deb11u2 | DLA-4161-1 | May 9, 2025 |
| simplesamlphp · Debian 12.15 (bookworm) | 1.19.7-1+deb12u2 | DEBIAN-CVE-2025-27773 | Mar 11, 2025 |
| simplesamlphp · Debian 14 | 1.19.7-2 | DEBIAN-CVE-2025-27773 | Mar 11, 2025 |
| simplesamlphp · Ubuntu 18.04.6 LTS (bionic) | 1.15.3-1ubuntu0.1~esm1 | simplesamlphp 1.15.3-1ubuntu0.1~esm1 | Mar 11, 2025 |
| simplesamlphp · Ubuntu 20.04 LTS (focal) | 1.18.4-1ubuntu0.1~esm1 | simplesamlphp 1.18.4-1ubuntu0.1~esm1 | Mar 11, 2025 |
| simplesamlphp · Ubuntu 22.04.1 LTS (jammy) | 1.19.1-1.1ubuntu0.1~esm1 | simplesamlphp 1.19.1-1.1ubuntu0.1~esm1 | Mar 11, 2025 |
| simplesamlphp · Ubuntu 24.04.5 LTS (noble) | 1.19.7-1+deb12u1ubuntu0.1 | simplesamlphp 1.19.7-1+deb12u1ubuntu0.1 | Mar 11, 2025 |
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