CVE-2002-0515

Name: CVE-2002-0515
Creator: NVD / NIST
Published: 2002-08-12T04:00:00+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 2.20%

Last modified Jun 16, 2026

CVE-2002-0515 is a vulnerability of currently unknown severity. IPFilter 3.4.25 and earlier sets a different TTL when a port is being filtered than when it is not being filtered, which allows remote attackers to identify filtered ports by comparing TTLs.. EPSS estimates a 2.20% chance of exploitation in the next 30 days.

Description

IPFilter 3.4.25 and earlier sets a different TTL when a port is being filtered than when it is not being filtered, which allows remote attackers to identify filtered ports by comparing TTLs.

Metrics

EPSS Probability

2.20%

80.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-203

Affected Software

Vendor	Product	Versions
Phildev	Ipfilter	<= 3.4.25

References

http://www.iss.net/security_center/static/8738.phpBroken Link, Vendor Advisory
http://www.securityfocus.com/archive/1/265188Broken Link, Third Party Advisory, VDB Entry, Vendor Advisory
http://www.securityfocus.com/bid/4403Broken Link, Exploit, Third Party Advisory, VDB Entry, Vendor Advisory
http://www.iss.net/security_center/static/8738.phpBroken Link, Vendor Advisory
http://www.securityfocus.com/archive/1/265188Broken Link, Third Party Advisory, VDB Entry, Vendor Advisory
http://www.securityfocus.com/bid/4403Broken Link, Exploit, Third Party Advisory, VDB Entry, Vendor Advisory

Timeline

Published: Aug 12, 2002
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2002-0515?

IPFilter 3.4.25 and earlier sets a different TTL when a port is being filtered than when it is not being filtered, which allows remote attackers to identify filtered ports by comparing TTLs.

How severe is CVE-2002-0515?

Severity scoring for CVE-2002-0515 is pending analysis. The EPSS model estimates a 2.20% probability of exploitation in the next 30 days.

How do I fix CVE-2002-0515?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2002-0515?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST