CVE-2002-0515 — MEDIUM severity vulnerability (IPFilter 3.4.25 and earlier sets a different TTL when a port)
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.
| CVE ID | CVE-2002-0515 |
|---|---|
| Severity | MEDIUM |
| CVSS score | 5.0 |
| CVSS vector | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| CWE | CWE-203 |
| Status | Modified |
| Published | 2002-08-12 |
| Last modified | 2026-04-16 |
| 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. |
| Source | NIST National Vulnerability Database |
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