CyberRota Analysis
AI-GeneratedVersions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final of the Netty framework are vulnerable to a security control bypass that affects the CorsHandler's shortCircuit() configuration, allowing unauthorized cross-origin requests to reach the backend application. This vulnerability can be exploited by attackers sending requests with an Origin: null header, compromising access controls. Organizations using affected versions should prioritize upgrading to 4.1.136.Final or 4.2.16.Final to mitigate this risk.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
Netty is a network application framework for development of protocol servers and clients. Versions 4.2.0.Final through 4.2.15.Final and 4.1.0.Final through 4.1.135.Final, are vulnerable to security control bypass during the origin evaluation process. CorsHandler provides a shortCircuit() configuration designed to reject unauthorized cross-origin requests immediately, acting as a security control before requests reach the application. However, due to a logical operator error in the origin evaluation process, this protection can be entirely bypassed. An attacker can bypass the short-circuit mechanism by sending a request with an Origin: null header. This failure forwards unauthorized requests to the backend application, bypassing intended access controls. This issue is fixed in versions 4.1.136.Final and 4.2.16.Final.
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