gsd-2022-23632
Vulnerability from gsd
Modified
2023-12-13 01:19
Details
Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.6.1, Traefik skips the router transport layer security (TLS) configuration when the host header is a fully qualified domain name (FQDN). For a request, the TLS configuration choice can be different than the router choice, which implies the use of a wrong TLS configuration. When sending a request using FQDN handled by a router configured with a dedicated TLS configuration, the TLS configuration falls back to the default configuration that might not correspond to the configured one. If the CNAME flattening is enabled, the selected TLS configuration is the SNI one and the routing uses the CNAME value, so this can skip the expected TLS configuration. Version 2.6.1 contains a patch for this issue. As a workaround, one may add the FDQN to the host rule. However, there is no workaround if the CNAME flattening is enabled.
Aliases
Aliases
CVE-2022-23632


To clipboard 

{
  "GSD": {
    "alias": "CVE-2022-23632",
    "description": "Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.6.1, Traefik skips the router transport layer security (TLS) configuration when the host header is a fully qualified domain name (FQDN). For a request, the TLS configuration choice can be different than the router choice, which implies the use of a wrong TLS configuration. When sending a request using FQDN handled by a router configured with a dedicated TLS configuration, the TLS configuration falls back to the default configuration that might not correspond to the configured one. If the CNAME flattening is enabled, the selected TLS configuration is the SNI one and the routing uses the CNAME value, so this can skip the expected TLS configuration. Version 2.6.1 contains a patch for this issue. As a workaround, one may add the FDQN to the host rule. However, there is no workaround if the CNAME flattening is enabled.",
    "id": "GSD-2022-23632",
    "references": [
      "https://www.suse.com/security/cve/CVE-2022-23632.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2022-23632"
      ],
      "details": "Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.6.1, Traefik skips the router transport layer security (TLS) configuration when the host header is a fully qualified domain name (FQDN). For a request, the TLS configuration choice can be different than the router choice, which implies the use of a wrong TLS configuration. When sending a request using FQDN handled by a router configured with a dedicated TLS configuration, the TLS configuration falls back to the default configuration that might not correspond to the configured one. If the CNAME flattening is enabled, the selected TLS configuration is the SNI one and the routing uses the CNAME value, so this can skip the expected TLS configuration. Version 2.6.1 contains a patch for this issue. As a workaround, one may add the FDQN to the host rule. However, there is no workaround if the CNAME flattening is enabled.",
      "id": "GSD-2022-23632",
      "modified": "2023-12-13T01:19:35.030354Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
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      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2022-23632",
        "STATE": "PUBLIC",
        "TITLE": "Traefik skips the router TLS configuration when the host header is an FQDN"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "traefik",
                    "version": {
                      "version_data": [
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                          "version_value": "\u003c 2.6.1"
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            "value": "Traefik is an HTTP reverse proxy and load balancer. Prior to version 2.6.1, Traefik skips the router transport layer security (TLS) configuration when the host header is a fully qualified domain name (FQDN). For a request, the TLS configuration choice can be different than the router choice, which implies the use of a wrong TLS configuration. When sending a request using FQDN handled by a router configured with a dedicated TLS configuration, the TLS configuration falls back to the default configuration that might not correspond to the configured one. If the CNAME flattening is enabled, the selected TLS configuration is the SNI one and the routing uses the CNAME value, so this can skip the expected TLS configuration. Version 2.6.1 contains a patch for this issue. As a workaround, one may add the FDQN to the host rule. However, there is no workaround if the CNAME flattening is enabled."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.4,
          "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:N",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-295: Improper Certificate Validation"
              }
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          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/traefik/traefik/security/advisories/GHSA-hrhx-6h34-j5hc",
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            "url": "https://github.com/traefik/traefik/security/advisories/GHSA-hrhx-6h34-j5hc"
          },
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            "refsource": "MISC",
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          },
          {
            "name": "https://github.com/traefik/traefik/releases/tag/v2.6.1",
            "refsource": "MISC",
            "url": "https://github.com/traefik/traefik/releases/tag/v2.6.1"
          },
          {
            "name": "https://www.oracle.com/security-alerts/cpujul2022.html",
            "refsource": "MISC",
            "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-hrhx-6h34-j5hc",
        "discovery": "UNKNOWN"
      }
    },
    "gitlab.com": {
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        {
          "affected_range": "\u003cv2.6.1",
          "affected_versions": "All versions before 2.6.1",
          "cwe_ids": [
            "CWE-1035",
            "CWE-295",
            "CWE-937"
          ],
          "date": "2022-02-17",
          "description": "Traefik is an HTTP reverse proxy and load balancer., Traefik skips the router transport layer security (TLS) configuration when the host header is a fully qualified domain name (FQDN). For a request, the TLS configuration choice can be different than the router choice, which implies the use of a wrong TLS configuration. When sending a request using FQDN handled by a router configured with a dedicated TLS configuration, the TLS configuration falls back to the default configuration that might not correspond to the configured one. If the CNAME flattening is enabled, the selected TLS configuration is the SNI one and the routing uses the CNAME value, so this can skip the expected TLS configuration. contains a patch for this issue. As a workaround, one may add the FDQN to the host rule. However, there is no workaround if the CNAME flattening is enabled.",
          "fixed_versions": [
            "v2.6.1"
          ],
          "identifier": "CVE-2022-23632",
          "identifiers": [
            "GHSA-hrhx-6h34-j5hc",
            "CVE-2022-23632"
          ],
          "not_impacted": "All versions starting from 2.6.1",
          "package_slug": "go/github.com/traefik/traefik/v2",
          "pubdate": "2022-02-16",
          "solution": "Upgrade to version 2.6.1 or above.",
          "title": "Improper Certificate Validation",
          "urls": [
            "https://github.com/traefik/traefik/security/advisories/GHSA-hrhx-6h34-j5hc",
            "https://github.com/advisories/GHSA-hrhx-6h34-j5hc"
          ],
          "uuid": "dea94c23-d790-4f68-a1e1-e3575286a5ef",
          "versions": [
            {
              "commit": {
                "sha": "84a081054688349fa4e2513599e3bf2395331492",
                "tags": [
                  "v2.6.1"
                ],
                "timestamp": "20220214164408"
              },
              "number": "v2.6.1"
            }
          ]
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "2.6.1",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:oracle:communications_unified_inventory_management:7.5.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
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            "operator": "OR"
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        ]
      },
      "cve": {
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          "ID": "CVE-2022-23632"
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        "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 2.6.1, Traefik skips the router transport layer security (TLS) configuration when the host header is a fully qualified domain name (FQDN). For a request, the TLS configuration choice can be different than the router choice, which implies the use of a wrong TLS configuration. When sending a request using FQDN handled by a router configured with a dedicated TLS configuration, the TLS configuration falls back to the default configuration that might not correspond to the configured one. If the CNAME flattening is enabled, the selected TLS configuration is the SNI one and the routing uses the CNAME value, so this can skip the expected TLS configuration. Version 2.6.1 contains a patch for this issue. As a workaround, one may add the FDQN to the host rule. However, there is no workaround if the CNAME flattening is enabled."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
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                  "value": "CWE-295"
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        "references": {
          "reference_data": [
            {
              "name": "https://github.com/traefik/traefik/security/advisories/GHSA-hrhx-6h34-j5hc",
              "refsource": "CONFIRM",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/traefik/traefik/security/advisories/GHSA-hrhx-6h34-j5hc"
            },
            {
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            },
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              "refsource": "MISC",
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              "url": "https://github.com/traefik/traefik/releases/tag/v2.6.1"
            },
            {
              "name": "N/A",
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              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
            }
          ]
        }
      },
      "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": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
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          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-11-23T19:22Z",
      "publishedDate": "2022-02-17T15:15Z"
    }
  }
}


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