CVE-2002-0054
HighSummary
The SMTP service in Microsoft Windows 2000 and the Internet Mail Connector in Exchange Server 5.5 improperly handle responses to NTLM authentication, allowing remote attackers to perform mail relaying via an SMTP AUTH command using null session credentials.
Risk Assessment
Attackers can exploit this vulnerability to send unauthorized email messages, potentially leading to abuse and resource blocking for the organization.
Recommendation
It is recommended to update systems to the latest versions and implement appropriate security measures to mitigate the risk of this vulnerability.
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Original NVD description (English source)
SMTP service in (1) Microsoft Windows 2000 and (2) Internet Mail Connector (IMC) in Exchange Server 5.5 does not properly handle responses to NTLM authentication, which allows remote attackers to perform mail relaying via an SMTP AUTH command using null session credentials.