gsd-2022-39955
Vulnerability from gsd
Modified
2023-12-13 01:19
Details
The OWASP ModSecurity Core Rule Set (CRS) is affected by a partial rule set bypass by submitting a specially crafted HTTP Content-Type header field that indicates multiple character encoding schemes. A vulnerable back-end can potentially be exploited by declaring multiple Content-Type "charset" names and therefore bypassing the configurable CRS Content-Type header "charset" allow list. An encoded payload can bypass CRS detection this way and may then be decoded by the backend. The legacy CRS versions 3.0.x and 3.1.x are affected, as well as the currently supported versions 3.2.1 and 3.3.2. Integrators and users are advised to upgrade to 3.2.2 and 3.3.3 respectively.
Aliases
Aliases
CVE-2022-39955


To clipboard 

{
  "GSD": {
    "alias": "CVE-2022-39955",
    "description": "The OWASP ModSecurity Core Rule Set (CRS) is affected by a partial rule set bypass by submitting a specially crafted HTTP Content-Type header field that indicates multiple character encoding schemes. A vulnerable back-end can potentially be exploited by declaring multiple Content-Type \"charset\" names and therefore bypassing the configurable CRS Content-Type header \"charset\" allow list. An encoded payload can bypass CRS detection this way and may then be decoded by the backend. The legacy CRS versions 3.0.x and 3.1.x are affected, as well as the currently supported versions 3.2.1 and 3.3.2. Integrators and users are advised to upgrade to 3.2.2 and 3.3.3 respectively.",
    "id": "GSD-2022-39955",
    "references": [
      "https://www.suse.com/security/cve/CVE-2022-39955.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2022-39955"
      ],
      "details": "The OWASP ModSecurity Core Rule Set (CRS) is affected by a partial rule set bypass by submitting a specially crafted HTTP Content-Type header field that indicates multiple character encoding schemes. A vulnerable back-end can potentially be exploited by declaring multiple Content-Type \"charset\" names and therefore bypassing the configurable CRS Content-Type header \"charset\" allow list. An encoded payload can bypass CRS detection this way and may then be decoded by the backend. The legacy CRS versions 3.0.x and 3.1.x are affected, as well as the currently supported versions 3.2.1 and 3.3.2. Integrators and users are advised to upgrade to 3.2.2 and 3.3.3 respectively.",
      "id": "GSD-2022-39955",
      "modified": "2023-12-13T01:19:20.811297Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "vulnerability@ncsc.ch",
        "ID": "CVE-2022-39955",
        "STATE": "PUBLIC",
        "TITLE": "Partial rule set bypass in OWASP ModSecurity Core Rule Set by submitting a specially crafted HTTP Content-Type header"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "ModSecurity Core Rule Set",
                    "version": {
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                          "version_affected": "=",
                          "version_value": "3.0.x"
                        },
                        {
                          "version_affected": "=",
                          "version_value": "3.1.x"
                        },
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                          "version_affected": "\u003c=",
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              "vendor_name": "OWASP"
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      "credit": [
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          "lang": "eng",
          "value": "@terjanq (Jan Gora) "
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          }
        ]
      },
      "generator": {
        "engine": "Vulnogram 0.0.9"
      },
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          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.3,
          "baseSeverity": "HIGH",
          "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:L",
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                "value": "CWE-863  Incorrect Authorization"
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      },
      "references": {
        "reference_data": [
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            "name": "https://coreruleset.org/20220919/crs-version-3-3-3-and-3-2-2-covering-several-cves/",
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          {
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          },
          {
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            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2023/01/msg00033.html"
          },
          {
            "name": "GLSA-202305-25",
            "refsource": "GENTOO",
            "url": "https://security.gentoo.org/glsa/202305-25"
          }
        ]
      },
      "solution": [
        {
          "lang": "eng",
          "value": "upgrade to 3.2.2 or 3.3.3"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
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                "cpe23Uri": "cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "3.3.3",
                "versionStartIncluding": "3.3.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:owasp:owasp_modsecurity_core_rule_set:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "3.2.2",
                "versionStartIncluding": "3.0.0",
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              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*",
                "cpe_name": [],
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              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
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                "vulnerable": true
              }
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            "operator": "OR"
          }
        ]
      },
      "cve": {
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          "ID": "CVE-2022-39955"
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        "description": {
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            }
          ]
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        "problemtype": {
          "problemtype_data": [
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        "references": {
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              "url": "https://security.gentoo.org/glsa/202305-25"
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      },
      "impact": {
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2023-05-21T22:15Z",
      "publishedDate": "2022-09-20T07:15Z"
    }
  }
}


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