CyberRota Analysis
AI-GeneratedThe vulnerability in Netty's SMTP codec arises from the lack of proper CRLF validation in the command-name field, which could allow an attacker to exploit this weakness to inject malicious commands. This could lead to potential denial-of-service attacks or unauthorized access to email services. Organizations utilizing Netty for SMTP communications should prioritize addressing this issue to mitigate risks associated with email server security.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
Note: these links are listed for security research and verification purposes only.
Original NVD Description
A flaw was found in Netty netty-codec-smtp. The component does not properly validate Carriage Return (CR) and Line Feed (LF) characters in the SMTP command-name field. A remote attacker, if an application routes untrusted input into this field, can embed CR/LF characters to inject arbitrary SMTP commands. This can lead to SMTP command smuggling, allowing for unauthorized email relay or spoofing of sender/recipient addresses. While the impact is significant, the real-world exploitability is considered lower as applications typically do not place user-controlled data in the command-name field.