CyberRota Analysis
AI-GeneratedThe SimpleSAMLphp SAML2 library versions 4.19.2 and 4.20.2 are vulnerable to denial-of-service attacks due to the acceptance of attacker-controlled XPath transforms in XML signature processing. This flaw allows remote unauthenticated attackers to exhaust processing resources, impacting any entity that relies on the library. Organizations using these versions should prioritize upgrading to 4.19.3 or 4.20.3 to mitigate this high-severity vulnerability.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
The SimpleSAMLphp SAML2 library is a PHP library for SAML2 related functionality. In 4.19.2 and 4.20.2, the library permits attacker-controlled XPath transforms while processing XML signatures in specially crafted SAML messages. XPath evaluation can consume uncontrolled processing resources, allowing a remote unauthenticated attacker to deny service to any entity relying on SimpleSAMLphp or directly on the SAML2 library. The mitigation limits the number of transforms, permits only transform algorithms identified by the SAML 2.0 Core specification, and specifically rejects XPath transforms. This issue is fixed in versions 4.19.3 and 4.20.3.