CVE-ID

CVE-2004-0042
Learn more at National Vulnerability Database (NVD)
• CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
vsftpd 1.1.3 generates different error messages depending on whether or not a valid username exists, which allows remote attackers to identify valid usernames.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
Assigning CNA
MITRE Corporation
Date Record Created
20040108 Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Modified (20050526)
Votes (Legacy)
ACCEPT(2) Armstrong, Baker
NOOP(3) Cole, Wall, Williams
REJECT(1) Cox
Comments (Legacy) 
 Williams> insufficient data.
 CHANGE> [Cox changed vote from REVIEWING to REJECT]
 Cox> Expected behaviour.  By source code analysis the difference in
   behaviour mentioned in the report only occurs when an administrator has
   configured the server with an explicit userlist - either to allow or deny
   all users in the userlist.  The vsftpd manual page states that if a
   userlist is used then the user will be denied access before they are asked
   for a password to help prevent cleartext passwords being transmitted.  
   Administrators who don't want this behaviour do not need to configure an
   optional userlist.
Proposed (Legacy)
20040318
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