{"id":"CVE-2002-0515","aliases":["EUVD-2002-0511","GHSA-x74c-jx25-vjp6"],"status":"published","title":"IPFilter 3.4.25 and earlier sets a different TTL when a port is being filtered than when it is...","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.","severity":{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.02197,"percentile":0.82615,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-203"],"published":"2002-06-11T04:00:00Z","modified":"2026-06-16T21:57:35Z","products":[{"vendor":"phildev","product":"ipfilter"}],"references":[{"url":"http://www.securityfocus.com/archive/1/265188","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred","Broken Link","Third Party Advisory","VDB Entry","Vendor Advisory"]},{"url":"http://www.securityfocus.com/bid/4403","tags":["vdb-entry","x_refsource_BID","x_transferred","Broken Link","Exploit","Third Party Advisory","VDB Entry","Vendor Advisory"]},{"url":"http://www.iss.net/security_center/static/8738.php","tags":["vdb-entry","x_refsource_XF","x_transferred","Broken Link","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2002-0515"},{"url":"https://github.com/advisories/GHSA-x74c-jx25-vjp6"}],"sources":{"cve":[{"id":"CVE-2002-0515","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.","status":"published","published":"2002-06-11T04:00:00Z","modified":"2024-08-08T02:49:28.915Z","updated_at":"2026-11-02T14:33:55.303902Z"}],"euvd":[{"id":"EUVD-2002-0511","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.","status":"published","published":"2002-06-11T04:00:00Z","modified":"2024-08-08T02:49:28Z","updated_at":"2026-11-03T01:15:00.542292Z"}],"ghsa":[{"id":"GHSA-x74c-jx25-vjp6","title":"IPFilter 3.4.25 and earlier sets a different TTL when a port is being filtered than when it is...","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.","status":"published","published":"2022-04-30T18:19:22Z","modified":"2025-04-03T03:48:15Z","cwes":["CWE-203"],"updated_at":"2026-11-02T15:00:37.983289Z"}],"nvd":[{"id":"CVE-2002-0515","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.","status":"published","published":"2002-08-12T04:00:00Z","modified":"2026-06-16T21:57:35.55Z","cvss":[{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-203"],"updated_at":"2026-11-02T14:00:42.220505Z"}]}}