TypSoft FTP Server APPE and DELE commands denial of service

typsoft-ftpserver-appe-dele-dos (54407)

Medium Risk

Description:

TYPSoft FTP Server is vulnerable to a denial of service, caused by an error when the APPE or DELE command share a socket connection. By sending a specially-crafted request to the APPE or DELE command, a remote authenticated attacker could cause the server to crash.

*CVSS:

Base Score:	3.5
Access Vector:	Network
Access Complexity:	Medium
Authentication:	Single
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	Partial
Temporal Score:	3.2
Exploitability:	Functional
Remediation Level:	Unavailable
Report Confidence:	Uncorroborated

Consequences:

Denial of Service

Remedy:

No remedy available as of July 9, 2011.

References:

• BugTraq Mailing List, Mon Nov 23 2009: TYPSoft FTP Server 'APPE' and 'DELE' Commands Remote DoS Vulnerabilities.
• SOFTPEDIA Web site: TYPSoft FTP Server.
• BID-37114: TYPSoft FTP Server 'APPE' and 'DELE' Commands Remote Denial of Service Vulnerability
• CVE-2009-4105: TYPSoft FTP Server 1.10 allows remote authenticated users to cause a denial of service (crash) by sending an APPE (append) command immediately followed by a DELE (delete) command without sending file data in between these two commands.
• SECTRACK ID: 1023234: TYPSoft FTP Server APPE and DELE Command Processing Flaw Lets Remote Authenticated Users Deny Service

Platforms Affected:

• TYPSoft TYPSoft FTP Server 0.99.8
• TYPSoft TYPSoft FTP Server 1.03
• TYPSoft TYPSoft FTP Server 1.10

Reported:

Nov 23, 2009

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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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