CyberRota Analysis
AI-GeneratedDovecot is vulnerable to an SMTP smuggling attack that allows an attacker to bypass outbound protections by exploiting crafted line endings in message bodies, potentially leading to the injection of spoofed emails. Organizations using Dovecot for email relay, especially those with downstream mail servers that have not patched similar vulnerabilities, should prioritize addressing this issue to prevent unauthorized email manipulation. It is recommended to ensure that receiving mail servers reject bare carriage returns in message data and to update to a non-vulnerable version of Dovecot.
Public Exploit Signal
A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.
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Original NVD Description
An attacker that can get Dovecot to relay a message, for example through Sieve redirect or submission relay, can use a crafted line ending in the message body to bypass the outbound protection that prevents message content from being interpreted as SMTP commands. A downstream mail server that hasn't yet fixed the SMTP smuggling vulnerability can be tricked into treating part of the message body as new SMTP commands, allowing injection of spoofed email. This is the same vulnerability class as CVE-2023-51764 and CVE-2023-51766. Where you control the receiving mail servers, ensure they reject bare carriage returns in message data. Update to non-vulnerable version. No publicly available exploits are known.