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CVE-2025-3986: Apereo CAS CasConfigurationMetadataServerController.java redos

5.3 CVSS

Description

A vulnerability was found in Apereo CAS 5.2.6. It has been declared as problematic. This vulnerability affects unknown code of the file cas-5.2.6\core\cas-server-core-configuration-metadata-repository\src\main\java\org\apereo\cas\metadata\rest\CasConfigurationMetadataServerController.java. The manipulation of the argument Name leads to inefficient regular expression complexity. The attack can be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way. In Apereo CAS 5.2.6 wurde eine Schwachstelle ausgemacht. Sie wurde als problematisch eingestuft. Betroffen ist eine unbekannte Verarbeitung der Datei cas-5.2.6\core\cas-server-core-configuration-metadata-repository\src\main\java\org\apereo\cas\metadata\rest\CasConfigurationMetadataServerController.java. Mittels dem Manipulieren des Arguments Name mit unbekannten Daten kann eine inefficient regular expression complexity-Schwachstelle ausgenutzt werden. Der Angriff kann über das Netzwerk passieren. Der Exploit steht zur öffentlichen Verfügung.

Classification

CVE ID: CVE-2025-3986

CVSS Base Severity: MEDIUM

CVSS Base Score: 5.3

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

Problem Types

Inefficient Regular Expression Complexity Resource Consumption

Affected Products

Vendor: Apereo

Product: CAS

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 12.03% (scored less or equal to compared to others)

EPSS Date: 2025-05-26 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-3986
https://vuldb.com/?id.306322
https://vuldb.com/?ctiid.306322
https://vuldb.com/?submit.557473
https://wx.mail.qq.com/s?k=rk-m8GwRMVMcOjBY1a

Timeline