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Citadel < 7.11 makeuserkey Function RCPT TO Command Remote Overflow



The remote host is vulnerable to a buffer overflow.


The remote host is running Citadel, a messaging software for Unix systems. There is a buffer overflow vulnerability in the remote version of this software that may be exploited by an attacker to execute arbitrary commands on the remote host. The flaw stems from a flaw when handling user-supplied 'RCPT TO' data. The application cannot handle 'RCPT TO' strings that are greater than 4096 bytes.


Upgrade to version 7.11 or higher.