Blackmoon FTP Server Port command buffer overflow

blackmoon-port-bo (64696)

High Risk

Description:

Blackmoon FTP Server is vulnerable to a buffer overflow, caused by improper bounds checking. By sending an overly long Port command, a remote attacker could overflow a buffer and execute arbitrary code on the system with elevated privileges or cause the application to crash.

*CVSS:

Base Score:	6.8
Access Vector:	Network
Access Complexity:	Medium
Authentication:	None
Confidentiality Impact:	Partial
Integrity Impact:	Partial
Availability Impact:	Partial
Temporal Score:	5.3
Exploitability:	Proof-of-Concept
Remediation Level:	Official-Fix
Report Confidence:	Confirmed

Consequences:

Gain Access

Remedy:

Upgrade to the latest version of BlackMoon FTP Server 3.1.8.1737, available from the BlackMoon Web site. See References.

References:

• Blackmoon FTP Server Web Server: Blackmoon FTP Server.
• Offensive Security Exploit Database [01-13-2011]: Blackmoon FTP 3.1 Build 1735,1736 DOS.
• BID-45814: Blackmoon FTP 'Port' Command Buffer Overflow Vulnerability
• CVE-2011-0507: FTPService.exe in Blackmoon FTP 3.1 Build 1735 and Build 1736 (3.1.7.1736), and possibly other versions before 3.1.8.1737, allows remote attackers to cause a denial of service (crash) via a large number of PORT commands with long arguments, which triggers a NULL pointer dereference. NOTE: some of these details are obtained from third party information.
• OSVDB ID: 70452: BlackMoon FTP Server PORT Command NULL Dereference Remote DoS
• SA42933: BlackMoon FTP Server PORT Command Processing Denial of Service

Platforms Affected:

• Blackmoon FTP Server 3.1 Release 6

Reported:

Jan 13, 2010

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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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