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Microsoft Exchange IMC SMTP EHLO Hostname Overflow



The remote host is vulnerable to a buffer overflow.


A security vulnerability results because of an unchecked buffer in the IMC code that generates the response to the EHLO protocol command. If the buffer were overrun with data it would result in either the failure of the IMC or could allow the attacker to run code in the security context of the IMC, which runs as Exchange 5.5 Service Account.


Upgrade or patch according to vendor recommendations.