| Package | simplesamlphp |
|---|---|
| Version | 1.16.3-1+deb10u4 (buster) |
| Related CVEs | CVE-2020-5225 CVE-2025-27773 |
Multiple vulnerabilites have been discovered in SimpleSAMLphp, a framework for authentication, primarily via the SAML protocol.
CVE-2020-5225
Log injection in SimpleSAMLphp before version 1.18.4. The www/erroreport.php script, which receives error reports and sends them via email to the system administrator, did not properly sanitize the report identifier obtained from the request. This allows an attacker, under specific circumstances, to inject new log lines by manually crafting this report ID. When configured to use the file logging handler, SimpleSAMLphp will output all its logs by appending each log line to a given file. Since the reportID parameter received in a request sent to www/errorreport.php was not properly sanitized, it was possible to inject newline characters into it, effectively allowing a malicious user to inject new log lines with arbitrary content.
CVE-2025-27773
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.
For Debian 10 buster, these problems have been fixed in version 1.16.3-1+deb10u4.
We recommend that you upgrade your simplesamlphp packages.
Further information about Extended LTS security advisories can be found in the dedicated section of our website.