{ "containers": { "cna": { "affected": [ { "product": "traefik", "vendor": "traefik", "versions": [ { "status": "affected", "version": "< 2.4.13" }, { "status": "affected", "version": "<= 1.7.30" } ] } ], "descriptions": [ { "lang": "en", "value": "Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.4.13, there exists a potential header vulnerability in Traefik's handling of the Connection header. Active exploitation of this issue is unlikely, as it requires that a removed header would lead to a privilege escalation, however, the Traefik team has addressed this issue to prevent any potential abuse. If one has a chain of Traefik middlewares, and one of them sets a request header, then sending a request with a certain Connection header will cause it to be removed before the request is sent. In this case, the backend does not see the request header. A patch is available in version 2.4.13. There are no known workarounds aside from upgrading." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N", "version": "3.1" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-913", "description": "CWE-913: Improper Control of Dynamically-Managed Code Resources", "lang": "en", "type": "CWE" } ] } ], "providerMetadata": { "dateUpdated": "2021-08-03T22:50:11.000Z", "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M" }, "references": [ { "tags": [ "x_refsource_CONFIRM" ], "url": "https://github.com/traefik/traefik/security/advisories/GHSA-m697-4v8f-55qg" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/traefik/traefik/pull/8319/commits/cbaf86a93014a969b8accf39301932c17d0d73f9" }, { "tags": [ "x_refsource_MISC" ], "url": "https://github.com/traefik/traefik/releases/tag/v2.4.13" } ], "source": { "advisory": "GHSA-m697-4v8f-55qg", "discovery": "UNKNOWN" }, "title": "Drop Headers via Malicious Connection Header", "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "security-advisories@github.com", "ID": "CVE-2021-32813", "STATE": "PUBLIC", "TITLE": "Drop Headers via Malicious Connection Header" }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "traefik", "version": { "version_data": [ { "version_value": "< 2.4.13" }, { "version_value": "<= 1.7.30" } ] } } ] }, "vendor_name": "traefik" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.4.13, there exists a potential header vulnerability in Traefik's handling of the Connection header. Active exploitation of this issue is unlikely, as it requires that a removed header would lead to a privilege escalation, however, the Traefik team has addressed this issue to prevent any potential abuse. If one has a chain of Traefik middlewares, and one of them sets a request header, then sending a request with a certain Connection header will cause it to be removed before the request is sent. In this case, the backend does not see the request header. A patch is available in version 2.4.13. There are no known workarounds aside from upgrading." } ] }, "impact": { "cvss": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 4.8, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N", "version": "3.1" } }, "problemtype": { "problemtype_data": [ { "description": [ { "lang": "eng", "value": "CWE-913: Improper Control of Dynamically-Managed Code Resources" } ] } ] }, "references": { "reference_data": [ { "name": "https://github.com/traefik/traefik/security/advisories/GHSA-m697-4v8f-55qg", "refsource": "CONFIRM", "url": "https://github.com/traefik/traefik/security/advisories/GHSA-m697-4v8f-55qg" }, { "name": "https://github.com/traefik/traefik/pull/8319/commits/cbaf86a93014a969b8accf39301932c17d0d73f9", "refsource": "MISC", "url": "https://github.com/traefik/traefik/pull/8319/commits/cbaf86a93014a969b8accf39301932c17d0d73f9" }, { "name": "https://github.com/traefik/traefik/releases/tag/v2.4.13", "refsource": "MISC", "url": "https://github.com/traefik/traefik/releases/tag/v2.4.13" } ] }, "source": { "advisory": "GHSA-m697-4v8f-55qg", "discovery": "UNKNOWN" } } }, "adp": [ { "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T23:33:55.883Z" }, "title": "CVE Program Container", "references": [ { "tags": [ "x_refsource_CONFIRM", "x_transferred" ], "url": "https://github.com/traefik/traefik/security/advisories/GHSA-m697-4v8f-55qg" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://github.com/traefik/traefik/pull/8319/commits/cbaf86a93014a969b8accf39301932c17d0d73f9" }, { "tags": [ "x_refsource_MISC", "x_transferred" ], "url": "https://github.com/traefik/traefik/releases/tag/v2.4.13" } ] } ] }, "cveMetadata": { "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "assignerShortName": "GitHub_M", "cveId": "CVE-2021-32813", "datePublished": "2021-08-03T22:50:11.000Z", "dateReserved": "2021-05-12T00:00:00.000Z", "dateUpdated": "2024-08-03T23:33:55.883Z", "state": "PUBLISHED" }, "dataType": "CVE_RECORD", "dataVersion": "5.1" }