PT-2002-2699 · Ipfilter · Ipfilter

Published 2002-12-31 · Updated 2009-04-03 · CVE-2002-1978

Positive Technologies (AI Summary)

CVSS v2.0

7.5

High

Base vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions IPFilter versions 3.1.1 through 3.4.28

Description The issue allows remote attackers to bypass firewall rules by sending a PASV command string as the argument of another command to an FTP server. This generates a response that contains the string, causing IPFilter to treat the response as if it were a legitimate PASV command from the server.

Recommendations For IPFilter versions 3.1.1 through 3.4.28, consider restricting access to the FTP server to minimize the risk of exploitation until a patch is available. As a temporary workaround, avoid using the PASV command in the FTP server configuration until the issue is resolved.

Fix

Weakness Enumeration

CWE-264

Related Identifiers

CVE-2002-1978

Affected Products

Ipfilter

References · 6

• ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2002-024.txt.asc · Vendor Advisory
• http://iss.net/security_center/static/10409.php · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2002-1978 · Security Note
• http://securityfocus.com/bid/6010 · Patch
• http://securitytracker.com/id?1005442 · Patch
• http://kb.cert.org/vuls/id/328867 · Note