{"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"}

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