{ "containers": { "cna": { "affected": [ { "product": "n/a", "vendor": "n/a", "versions": [ { "status": "affected", "version": "n/a" } ] } ], "descriptions": [ { "lang": "en", "value": "An issue was discovered in Suricata before 6.0.4. It is possible to bypass/evade any HTTP-based signature by faking an RST TCP packet with random TCP options of the md5header from the client side. After the three-way handshake, it's possible to inject an RST ACK with a random TCP md5header option. Then, the client can send an HTTP GET request with a forbidden URL. The server will ignore the RST ACK and send the response HTTP packet for the client's request. These packets will not trigger a Suricata reject action." } ], "problemTypes": [ { "descriptions": [ { "description": "n/a", "lang": "en", "type": "text" } ] } ], "providerMetadata": { "dateUpdated": "2021-12-16T04:07:57.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/OISF/suricata/releases" }, { "tags": [ "x_refsource_MISC" ], "url": "https://redmine.openinfosecfoundation.org/issues/4710" }, { "tags": [ "x_refsource_MISC" ], "url": "https://forum.suricata.io/t/suricata-6-0-4-and-5-0-8-released/1942" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/OISF/suricata/commit/50e2b973eeec7172991bf8f544ab06fb782b97df" } ], "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-45098", "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": "An issue was discovered in Suricata before 6.0.4. It is possible to bypass/evade any HTTP-based signature by faking an RST TCP packet with random TCP options of the md5header from the client side. After the three-way handshake, it's possible to inject an RST ACK with a random TCP md5header option. Then, the client can send an HTTP GET request with a forbidden URL. The server will ignore the RST ACK and send the response HTTP packet for the client's request. These packets will not trigger a Suricata reject action." } ] }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "n/a" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/OISF/suricata/releases", "refsource": "MISC", "url": "https://github.com/OISF/suricata/releases" }, { "name": "https://redmine.openinfosecfoundation.org/issues/4710", "refsource": "MISC", "url": "https://redmine.openinfosecfoundation.org/issues/4710" }, { "name": "https://forum.suricata.io/t/suricata-6-0-4-and-5-0-8-released/1942", "refsource": "MISC", "url": "https://forum.suricata.io/t/suricata-6-0-4-and-5-0-8-released/1942" }, { "name": "https://github.com/OISF/suricata/commit/50e2b973eeec7172991bf8f544ab06fb782b97df", "refsource": "MISC", "url": "https://github.com/OISF/suricata/commit/50e2b973eeec7172991bf8f544ab06fb782b97df" } ] } } }, "adp": [ { "title": "CVE Program Container", "references": [ { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://github.com/OISF/suricata/releases" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://redmine.openinfosecfoundation.org/issues/4710" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://forum.suricata.io/t/suricata-6-0-4-and-5-0-8-released/1942" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://github.com/OISF/suricata/commit/50e2b973eeec7172991bf8f544ab06fb782b97df" }, { "url": "https://lists.debian.org/debian-lts-announce/2025/03/msg00029.html" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2025-11-03T19:26:34.251Z" } } ] }, "cveMetadata": { "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2021-45098", "datePublished": "2021-12-16T04:07:57.000Z", "dateReserved": "2021-12-16T00:00:00.000Z", "dateUpdated": "2025-11-03T19:26:34.251Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.2" }