AnalogX Proxy Long HELO command in SMTP Protocol DoS
Denial of Service
Loss of Availability
AnalogX Proxy contains a flaw that allows a remote attacker to crash the server. The issue is due to a buffer overflow condition in the SMTP service. By sending a HELO command containing 370 or more characters to port 25, an attacker will crash the server.
Upgrade to version 4.05 or higher, as it has been reported to fix this
vulnerability. An upgrade is required as there are no known workarounds.