Broker FTP Server "dot" buffer overflow
| broker-ftp-dot-bo (6673) |  Low Risk |
Description:
Broker FTP Server is vulnerable to a denial of service attack caused by a buffer overflow. Upon successfully logging in, a remote attacker can issue a CWD command followed by numerous "dot dot" characters with or without spaces in between (`CWD. .¿) to overflow a buffer and cause the server to crash.
Platforms Affected:
- TransSoft, Broker FTP Server 5.x
Remedy:
No remedy available as of July 4, 2009.
Consequences:
Denial of Service
References:
- BugTraq Mailing List, Mon May 27 2002 - 13:39:29 CDT, Problems with various windows FTP servers at http://archives.neohapsis.com/archives/bugtraq/2002-05/0239.html.
- BugTraq Mailing List, Sun Jun 10 2001 - 03:38:04 CDT, Broker FTP Server 5.9.5.0 Buffer Overflow / DoS / Directory Traversal at http://archives.neohapsis.com/archives/bugtraq/2001-06/0088.html.
- BID-2851: TransSoft Broker CWD Buffer Overflow Vulnerability
- BID-4864: TransSoft FTP-Broker Denial of Service Vulnerability
- CVE-2001-0688: Broker FTP Server 5.9.5.0 allows a remote attacker to cause a denial of service by repeatedly issuing an invalid CD or CWD (CD . .) command.
- CVE-2002-0405: Buffer overflow in Transsoft Broker FTP Server 5.0 evaluation allows remote attackers to cause a denial of service and possibly execute arbitrary code via a CWD command with a large number of . (dot) characters.
Reported:
Jun 10, 2001
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