{"id":"CVE-2001-0183","state":"PUBLISHED","title":"ipfw and ip6fw in FreeBSD 4.2 and earlier allows remote attackers to bypass access restrictions by setting the ECE flag in a TCP packet, which makes the packet appear to be part of","description":"ipfw and ip6fw in FreeBSD 4.2 and earlier allows remote attackers to bypass access restrictions by setting the ECE flag in a TCP packet, which makes the packet appear to be part of an established connection.","publishedAt":"2001-05-07T04:00:00.000Z","updatedAt":"2024-08-08T04:14:06.663Z","severity":null,"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["http://www.securityfocus.com/bid/2293","http://www.ciac.org/ciac/bulletins/l-029.shtml","http://www.security-express.com/archives/bugtraq/2001-01/0424.html","https://exchange.xforce.ibmcloud.com/vulnerabilities/5998","http://www.osvdb.org/1743"],"weaknesses":[],"ingestedAt":"2026-10-29T19:26:31.213Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2001/0xxx/CVE-2001-0183.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2001-0183","state":"PUBLISHED","datePublished":"2001-05-07T04:00:00.000Z","dateUpdated":"2024-08-08T04:14:06.663Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2001-03-08T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"ipfw and ip6fw in FreeBSD 4.2 and earlier allows remote attackers to bypass access restrictions by setting the ECE flag in a TCP packet, which makes the packet appear to be part of an established connection."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"http://www.securityfocus.com/bid/2293","name":"2293","tags":["vdb-entry","x_refsource_BID"]},{"url":"http://www.ciac.org/ciac/bulletins/l-029.shtml","name":"L-029","tags":["third-party-advisory","government-resource","x_refsource_CIAC"]},{"url":"http://www.security-express.com/archives/bugtraq/2001-01/0424.html","name":"20010125 ecepass - proof of concept code for FreeBSD ipfw bypass","tags":["mailing-list","x_refsource_BUGTRAQ"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/5998","name":"ipfw-bypass-firewall(5998)","tags":["vdb-entry","x_refsource_XF"]},{"url":"ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:08.ipfw.asc","name":"FreeBSD-SA-01:08","tags":["vendor-advisory","x_refsource_FREEBSD"]},{"url":"http://www.osvdb.org/1743","name":"1743","tags":["vdb-entry","x_refsource_OSVDB"]}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"mitre","dateUpdated":"2004-09-02T09:00:00.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca"},"datePublic":"2001-01-23T00:00:00.000Z","x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2001-0183","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"ipfw and ip6fw in FreeBSD 4.2 and earlier allows remote attackers to bypass access restrictions by setting the ECE flag in a TCP packet, which makes the packet appear to be part of an established connection."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"2293","refsource":"BID","url":"http://www.securityfocus.com/bid/2293"},{"name":"L-029","refsource":"CIAC","url":"http://www.ciac.org/ciac/bulletins/l-029.shtml"},{"name":"20010125 ecepass - proof of concept code for FreeBSD ipfw bypass","refsource":"BUGTRAQ","url":"http://www.security-express.com/archives/bugtraq/2001-01/0424.html"},{"name":"ipfw-bypass-firewall(5998)","refsource":"XF","url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/5998"},{"name":"FreeBSD-SA-01:08","refsource":"FREEBSD","url":"ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:08.ipfw.asc"},{"name":"1743","refsource":"OSVDB","url":"http://www.osvdb.org/1743"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.securityfocus.com/bid/2293","name":"2293","tags":["vdb-entry","x_refsource_BID","x_transferred"]},{"url":"http://www.ciac.org/ciac/bulletins/l-029.shtml","name":"L-029","tags":["third-party-advisory","government-resource","x_refsource_CIAC","x_transferred"]},{"url":"http://www.security-express.com/archives/bugtraq/2001-01/0424.html","name":"20010125 ecepass - proof of concept code for FreeBSD ipfw bypass","tags":["mailing-list","x_refsource_BUGTRAQ","x_transferred"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/5998","name":"ipfw-bypass-firewall(5998)","tags":["vdb-entry","x_refsource_XF","x_transferred"]},{"url":"ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:08.ipfw.asc","name":"FreeBSD-SA-01:08","tags":["vendor-advisory","x_refsource_FREEBSD","x_transferred"]},{"url":"http://www.osvdb.org/1743","name":"1743","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-08T04:14:06.663Z"}}]}}}