FKIE_CVE-2021-36740

Vulnerability from fkie_nvd - Published: 2021-07-14 17:15 - Updated: 2024-11-21 06:13
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Summary
Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL authorization bypass via a large Content-Length header for a POST request. This affects Varnish Enterprise 6.0.x before 6.0.8r3, and Varnish Cache 5.x and 6.x before 6.5.2, 6.6.x before 6.6.1, and 6.0 LTS before 6.0.8.
References
cve@mitre.orghttps://docs.varnish-software.com/security/VSV00007/Mitigation, Vendor Advisory
cve@mitre.orghttps://github.com/varnishcache/varnish-cache/commit/82b0a629f60136e76112c6f2c6372cce77b683bePatch, Third Party Advisory
cve@mitre.orghttps://github.com/varnishcache/varnish-cache/commit/9be22198e258d0e7a5c41f4291792214a29405cfPatch, Third Party Advisory
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/THV2DQA2GS65HUCKK4KSD2XLN3AAQ2V5/
cve@mitre.orghttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZHBNLDEOTGYRIEQZBWV7F6VPYS4O2AAK/
cve@mitre.orghttps://varnish-cache.org/security/VSV00007.htmlMitigation, Vendor Advisory
cve@mitre.orghttps://www.debian.org/security/2022/dsa-5088Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://docs.varnish-software.com/security/VSV00007/Mitigation, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/varnishcache/varnish-cache/commit/82b0a629f60136e76112c6f2c6372cce77b683bePatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/varnishcache/varnish-cache/commit/9be22198e258d0e7a5c41f4291792214a29405cfPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/THV2DQA2GS65HUCKK4KSD2XLN3AAQ2V5/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZHBNLDEOTGYRIEQZBWV7F6VPYS4O2AAK/
af854a3a-2127-422b-91ae-364da2661108https://varnish-cache.org/security/VSV00007.htmlMitigation, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2022/dsa-5088Third Party Advisory
Impacted products
Vendor Product Version
varnish-cache varnish_cache *
varnish-cache varnish_cache 6.0.8
varnish-cache varnish_cache 6.0.8
varnish-software varnish_cache *
varnish-software varnish_cache *
varnish_cache_project varnish_cache *
varnish_cache_project varnish_cache *
fedoraproject fedora 33
fedoraproject fedora 34
debian debian_linux 10.0
debian debian_linux 11.0
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:varnish-cache:varnish_cache:*:*:*:*:plus:*:*:*",
              "matchCriteriaId": "F094729F-7EA5-4AD5-B0C1-65F9A401838A",
              "versionEndExcluding": "6.0.8",
              "versionStartIncluding": "6.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:varnish-cache:varnish_cache:6.0.8:r1:*:*:plus:*:*:*",
              "matchCriteriaId": "B32A2391-A59E-45F3-8A65-3AF018F3F08F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:varnish-cache:varnish_cache:6.0.8:r2:*:*:plus:*:*:*",
              "matchCriteriaId": "26C18D9B-9561-49FB-A9E4-9A8F37635F86",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:varnish-software:varnish_cache:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "48EB8B3B-152D-46EF-B868-9EAA640EE11B",
              "versionEndIncluding": "6.0.5",
              "versionStartIncluding": "6.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:varnish-software:varnish_cache:*:*:*:*:lts:*:*:*",
              "matchCriteriaId": "3C9C515C-1514-4E52-98D5-850D6ACB60B0",
              "versionEndIncluding": "6.0.7",
              "versionStartIncluding": "6.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:varnish_cache_project:varnish_cache:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "80E7D421-3E84-4185-9FC4-ACF2C5A8E8EA",
              "versionEndIncluding": "5.2.1",
              "versionStartIncluding": "5.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:varnish_cache_project:varnish_cache:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A30F7732-D4C3-4D6E-8651-BC77A336AAEE",
              "versionEndIncluding": "6.6.0",
              "versionStartIncluding": "6.1.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
              "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
              "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Varnish Cache, with HTTP/2 enabled, allows request smuggling and VCL authorization bypass via a large Content-Length header for a POST request. This affects Varnish Enterprise 6.0.x before 6.0.8r3, and Varnish Cache 5.x and 6.x before 6.5.2, 6.6.x before 6.6.1, and 6.0 LTS before 6.0.8."
    },
    {
      "lang": "es",
      "value": "Varnish Cache, con HTTP/2 habilitado, permite el contrabando de peticiones y la omisi\u00f3n de autorizaci\u00f3n de VCL por medio de un encabezado Content-Length grande para una petici\u00f3n POST. Esto afecta a Varnish Enterprise versiones 6.0.x anteriores a 6.0.8r3, y Varnish Cache versiones 5.xy 6.x anteriores a 6.5.2, versiones 6.6.x anteriores a 6.6.1 y versiones 6.0 LTS anteriores a 6.0.8"
    }
  ],
  "id": "CVE-2021-36740",
  "lastModified": "2024-11-21T06:13:59.623",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 6.4,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 4.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 6.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 2.5,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-07-14T17:15:08.253",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://docs.varnish-software.com/security/VSV00007/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/varnishcache/varnish-cache/commit/82b0a629f60136e76112c6f2c6372cce77b683be"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Patch",
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      ],
      "url": "https://github.com/varnishcache/varnish-cache/commit/9be22198e258d0e7a5c41f4291792214a29405cf"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/THV2DQA2GS65HUCKK4KSD2XLN3AAQ2V5/"
    },
    {
      "source": "cve@mitre.org",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZHBNLDEOTGYRIEQZBWV7F6VPYS4O2AAK/"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://varnish-cache.org/security/VSV00007.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2022/dsa-5088"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
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      "url": "https://github.com/varnishcache/varnish-cache/commit/9be22198e258d0e7a5c41f4291792214a29405cf"
    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/THV2DQA2GS65HUCKK4KSD2XLN3AAQ2V5/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZHBNLDEOTGYRIEQZBWV7F6VPYS4O2AAK/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
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      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2022/dsa-5088"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-444"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.