VULNERABILITY INTELLIGENCE
CVE-2002-0515
CVSS score5 MEDIUM
EPSS probability2.20%
CISA KEVNot currently listed
Published2002-08-12
Last modified2026-06-16
CVSS vectorAV:N/AC:L/Au:N/C:P/I:N/A:N
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.
Weakness classification
- CWE-203: Observable Discrepancy
Primary references
- cve@mitre.org — Broken Link, Vendor Advisory
- cve@mitre.org — Broken Link, Third Party Advisory, VDB Entry, Vendor Advisory
- cve@mitre.org — Broken Link, Exploit, Third Party Advisory, VDB Entry, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Third Party Advisory, VDB Entry, Vendor Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Broken Link, Exploit, Third Party Advisory, VDB Entry, Vendor Advisory