gsd-2021-32813
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
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.
Aliases
Aliases
CVE-2021-32813


To clipboard 

{
   GSD: {
      alias: "CVE-2021-32813",
      description: "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.",
      id: "GSD-2021-32813",
      references: [
         "https://www.suse.com/security/cve/CVE-2021-32813.html",
         "https://security.archlinux.org/CVE-2021-32813",
      ],
   },
   gsd: {
      metadata: {
         exploitCode: "unknown",
         remediation: "unknown",
         reportConfidence: "confirmed",
         type: "vulnerability",
      },
      osvSchema: {
         aliases: [
            "CVE-2021-32813",
         ],
         details: "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.",
         id: "GSD-2021-32813",
         modified: "2023-12-13T01:23:08.835947Z",
         schema_version: "1.4.0",
      },
   },
   namespaces: {
      "cve.org": {
         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",
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         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",
         },
      },
      "gitlab.com": {
         advisories: [
            {
               affected_range: "<=1.7.30",
               affected_versions: "All versions up to 1.7.30",
               cvss_v2: "AV:N/AC:M/Au:N/C:P/I:P/A:P",
               cvss_v3: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
               cwe_ids: [
                  "CWE-1035",
                  "CWE-913",
                  "CWE-937",
               ],
               date: "2021-08-31",
               description: "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.",
               fixed_versions: [],
               identifier: "CVE-2021-32813",
               identifiers: [
                  "GHSA-m697-4v8f-55qg",
                  "CVE-2021-32813",
               ],
               not_impacted: "",
               package_slug: "go/github.com/traefik/traefik",
               pubdate: "2021-08-05",
               solution: "Unfortunately, there is no solution available yet.",
               title: "Improper Control of Dynamically-Managed Code Resources",
               urls: [
                  "https://github.com/traefik/traefik/security/advisories/GHSA-m697-4v8f-55qg",
                  "https://nvd.nist.gov/vuln/detail/CVE-2021-32813",
                  "https://github.com/traefik/traefik/pull/8319/commits/cbaf86a93014a969b8accf39301932c17d0d73f9",
                  "https://github.com/traefik/traefik/releases/tag/v2.4.13",
                  "https://github.com/advisories/GHSA-m697-4v8f-55qg",
               ],
               uuid: "01b072b1-3152-4c0c-88d4-2077ce44036e",
            },
            {
               affected_range: "<2.4.13",
               affected_versions: "All versions before 2.4.13",
               cvss_v2: "AV:N/AC:M/Au:N/C:P/I:P/A:P",
               cvss_v3: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
               cwe_ids: [
                  "CWE-1035",
                  "CWE-913",
                  "CWE-937",
               ],
               date: "2021-08-31",
               description: "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.",
               fixed_versions: [
                  "2.4.13",
               ],
               identifier: "CVE-2021-32813",
               identifiers: [
                  "GHSA-m697-4v8f-55qg",
                  "CVE-2021-32813",
               ],
               not_impacted: "All versions starting from 2.4.13",
               package_slug: "go/github.com/traefik/traefik/v2",
               pubdate: "2021-08-05",
               solution: "Upgrade to version 2.4.13 or above.",
               title: "Improper Control of Dynamically-Managed Code Resources",
               urls: [
                  "https://github.com/traefik/traefik/security/advisories/GHSA-m697-4v8f-55qg",
                  "https://nvd.nist.gov/vuln/detail/CVE-2021-32813",
                  "https://github.com/traefik/traefik/pull/8319/commits/cbaf86a93014a969b8accf39301932c17d0d73f9",
                  "https://github.com/traefik/traefik/releases/tag/v2.4.13",
                  "https://github.com/advisories/GHSA-m697-4v8f-55qg",
               ],
               uuid: "57e05dea-9834-4763-a993-8acb42435174",
            },
         ],
      },
      "nvd.nist.gov": {
         configurations: {
            CVE_data_version: "4.0",
            nodes: [
               {
                  children: [],
                  cpe_match: [
                     {
                        cpe23Uri: "cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*",
                        cpe_name: [],
                        versionEndExcluding: "2.4.13",
                        vulnerable: true,
                     },
                  ],
                  operator: "OR",
               },
            ],
         },
         cve: {
            CVE_data_meta: {
               ASSIGNER: "security-advisories@github.com",
               ID: "CVE-2021-32813",
            },
            data_format: "MITRE",
            data_type: "CVE",
            data_version: "4.0",
            description: {
               description_data: [
                  {
                     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.",
                  },
               ],
            },
            problemtype: {
               problemtype_data: [
                  {
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                           value: "CWE-913",
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            references: {
               reference_data: [
                  {
                     name: "https://github.com/traefik/traefik/pull/8319/commits/cbaf86a93014a969b8accf39301932c17d0d73f9",
                     refsource: "MISC",
                     tags: [
                        "Patch",
                        "Third Party Advisory",
                     ],
                     url: "https://github.com/traefik/traefik/pull/8319/commits/cbaf86a93014a969b8accf39301932c17d0d73f9",
                  },
                  {
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                     ],
                     url: "https://github.com/traefik/traefik/security/advisories/GHSA-m697-4v8f-55qg",
                  },
                  {
                     name: "https://github.com/traefik/traefik/releases/tag/v2.4.13",
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                     url: "https://github.com/traefik/traefik/releases/tag/v2.4.13",
                  },
               ],
            },
         },
         impact: {
            baseMetricV2: {
               acInsufInfo: false,
               cvssV2: {
                  accessComplexity: "MEDIUM",
                  accessVector: "NETWORK",
                  authentication: "NONE",
                  availabilityImpact: "PARTIAL",
                  baseScore: 6.8,
                  confidentialityImpact: "PARTIAL",
                  integrityImpact: "PARTIAL",
                  vectorString: "AV:N/AC:M/Au:N/C:P/I:P/A:P",
                  version: "2.0",
               },
               exploitabilityScore: 8.6,
               impactScore: 6.4,
               obtainAllPrivilege: false,
               obtainOtherPrivilege: false,
               obtainUserPrivilege: false,
               severity: "MEDIUM",
               userInteractionRequired: false,
            },
            baseMetricV3: {
               cvssV3: {
                  attackComplexity: "HIGH",
                  attackVector: "NETWORK",
                  availabilityImpact: "HIGH",
                  baseScore: 8.1,
                  baseSeverity: "HIGH",
                  confidentialityImpact: "HIGH",
                  integrityImpact: "HIGH",
                  privilegesRequired: "NONE",
                  scope: "UNCHANGED",
                  userInteraction: "NONE",
                  vectorString: "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
                  version: "3.1",
               },
               exploitabilityScore: 2.2,
               impactScore: 5.9,
            },
         },
         lastModifiedDate: "2021-08-11T23:40Z",
         publishedDate: "2021-08-03T23:15Z",
      },
   },
}


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