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Cobalt Raq3 PopRelayD Arbitrary SMTP Relay Vulnerability
poprelayd is a script that parses /var/log/maillog for valid pop logins, and based upon the login of a client, allows the person logged into the pop3 service to also send email from the ip address they're accessing the system with. poprelayd doesn't authenticate output to the /var/log/maillog file. This makes it possible for a user to create an arbitrary string via sendmail that will be logged to the file, thus allowing a remote user to relay mail through the SMTP server. |
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