WinFTP Server NLST denial of service

winftpserver-nlst-dos (45806)

Medium Risk

Description:

Win FTP Server is vulnerable to a denial of service, caused by an error when handling certain commands in PASV (passive) mode. By sending an NLST command containing a certain value, a remote attacker could cause the application to crash.

*CVSS:

Base Score:	4.3
Access Vector:	Network
Access Complexity:	Medium
Authentication:	None
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Partial
Temporal Score:	3.9
Exploitability:	Functional
Remediation Level:	Unavailable
Report Confidence:	Uncorroborated

Consequences:

Denial of Service

Remedy:

No remedy available as of July 9, 2011.

References:

• Win FTP Server Web site: Win FTP Server.
• BID-31686: Win FTP Server 'NLIST' Command Remote Denial of Service Vulnerability
• CVE-2008-5666: WinFTP FTP Server 2.3.0, when passive (aka PASV) mode is used, allows remote authenticated users to cause a denial of service via a sequence of FTP sessions that include an invalid NLST -1 command.
• SA32209: WinFTP "PASV" Denial of Service Vulnerability
• SECTRACK ID: 1021040: Win FTP NLST Command Processing Bug Lets Remote Authenticated Users Deny Service
• VUPEN/ADV-2008-2801: WinFTP PASV Command Remote Denial of Service Vulnerability

Platforms Affected:

• WinFTP Server WinFTP Server 2.3.0

Reported:

Oct 09, 2008

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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