6968 : Microsoft ISA Server 2000 FTP Port Scan Bounce Weakness
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Timeline

Disclosure Date
2004-06-10

Description

Microsoft ISA Server 2000 contains a flaw that may lead to an information disclosure. The problem is that the FTP server does not validate IP addresses supplied via the PORT command while in passive(PASV) mode. It is possible for a remote attacker to establish a connection between the FTP server and an arbitrary port on a third-party system, essentially conducting a port-scan. This can be used to obscure the the source of the port-scan, as well as scan internal systems that may be protected by a screening device.

Classification

Location: Remote / Network Access
Attack Type: Input Manipulation
Impact: Loss of Integrity
Exploit: Exploit Public

Products

Unknown or Incomplete

References

Security Tracker: 1010992
ISS X-Force ID: 17048
Microsoft Knowledge Base Article: 816459 816460
CERT: CA-1997-27
Mail List Post: http://archives.neohapsis.com/archives/bugtraq/1995_3/0047.html
Generic Informational URL: http://www.cert.org/tech_tips/ftp_port_attacks.html
Vendor Specific Solution URL: http://www.microsoft.com/downloads/details.aspx?FamilyID=2d797ea3-3958-4cbb-872e-a34455d96e6c&DisplayLang=en
http://www.microsoft.com/downloads/details.aspx?FamilyId=C8D3D98B-1CD4-406A-A04A-2AA2547D09A3&displaylang=en

Credit

Unknown or Incomplete

CVSSv2 Score

NVD does not currently have a CVSSv2 score assigned.

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