CVE-2002-0054: microsoft exchange_server Authentication Bypass by Capture-replay

Vulnerability summary

CVE-2002-0054 is a high (CVSS 7.5) Authentication Bypass by Capture-replay vulnerability in microsoft exchange_server. EPSS estimates a 22.44% chance of exploitation in the next 30 days, higher than 97.6% of scored vulnerabilities.

Timeline

1. 02-04-2003
   PublishedVulnerability first disclosed.
2. 08-08-2024
   Last modifiedVulnerability information updated.

Description

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.

• CWE-294Authentication Bypass by Capture-replayA capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).