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CVE-2002-0515

5.0 · MEDIUM

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.

Published Aug 12, 2002phildevCWE-203EPSS 2.20%

Overview

CVE-2002-0515 is a medium-severity vulnerability affecting phildev ipfilter. It was published on August 12, 2002 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from phildev. Update ipfilter to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
phildevipfilter0Affected

References

Refwww.iss.net/security_center/static/8738.phpRefwww.securityfocus.com/archive/1/265188Refwww.securityfocus.com/bid/4403Refwww.iss.net/security_center/static/8738.phpRefwww.securityfocus.com/archive/1/265188Refwww.securityfocus.com/bid/4403

How CyberStrike helps

Frequently asked questions

What is CVE-2002-0515?

CVE-2002-0515 is a medium-severity vulnerability affecting phildev ipfilter. It was published on August 12, 2002 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2002-0515?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2002-0515?

Check the references section for vendor advisories and patches from phildev. Update ipfilter to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2002-0515?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2002-0515 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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