gsd-2022-23476
Vulnerability from gsd
Modified
2022-12-07 00:00
Details
## Summary Nokogiri `1.13.8, 1.13.9` fails to check the return value from `xmlTextReaderExpand` in the method `Nokogiri::XML::Reader#attribute_hash`. This can lead to a null pointer exception when invalid markup is being parsed. For applications using `XML::Reader` to parse untrusted inputs, this may potentially be a vector for a denial of service attack. ## Mitigation Upgrade to Nokogiri `>= 1.13.10`. Users may be able to search their code for calls to either `XML::Reader#attributes` or `XML::Reader#attribute_hash` to determine if they are affected. ## Severity The Nokogiri maintainers have evaluated this as [High Severity 7.5 (CVSS3.1)](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). ## References - [CWE - CWE-252: Unchecked Return Value (4.9)](https://cwe.mitre.org/data/definitions/252.html) - [CWE - CWE-476: NULL Pointer Dereference (4.9)](https://cwe.mitre.org/data/definitions/476.html) ## Credit This vulnerability was responsibly reported by @davidwilemski.
Aliases
Aliases
CVE-2022-23476


To clipboard 

{
  "GSD": {
    "alias": "CVE-2022-23476",
    "id": "GSD-2022-23476",
    "references": [
      "https://www.suse.com/security/cve/CVE-2022-23476.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "nokogiri",
            "purl": "pkg:gem/nokogiri"
          }
        }
      ],
      "aliases": [
        "CVE-2022-23476",
        "GHSA-qv4q-mr5r-qprj"
      ],
      "details": "## Summary\n\nNokogiri `1.13.8, 1.13.9` fails to check the return value from `xmlTextReaderExpand` in the method `Nokogiri::XML::Reader#attribute_hash`. This can lead to a null pointer exception when invalid markup is being parsed.\n\nFor applications using `XML::Reader` to parse untrusted inputs, this may potentially be a vector for a denial of service attack.\n\n\n## Mitigation\n\nUpgrade to Nokogiri `\u003e= 1.13.10`.\n\nUsers may be able to search their code for calls to either `XML::Reader#attributes` or `XML::Reader#attribute_hash` to determine if they are affected.\n\n\n## Severity\n\nThe Nokogiri maintainers have evaluated this as [High Severity 7.5 (CVSS3.1)](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).\n\n\n## References\n\n- [CWE - CWE-252: Unchecked Return Value (4.9)](https://cwe.mitre.org/data/definitions/252.html)\n- [CWE - CWE-476: NULL Pointer Dereference (4.9)](https://cwe.mitre.org/data/definitions/476.html)\n\n\n## Credit\n\nThis vulnerability was responsibly reported by @davidwilemski.\n",
      "id": "GSD-2022-23476",
      "modified": "2022-12-07T00:00:00.000Z",
      "published": "2022-12-07T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-qv4q-mr5r-qprj"
        }
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 7.5,
          "type": "CVSS_V3"
        }
      ],
      "summary": "Unchecked return value from xmlTextReaderExpand"
    }
  },
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        "ID": "CVE-2022-23476",
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                    "product_name": "nokogiri",
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            "value": "Nokogiri is an open source XML and HTML library for the Ruby programming language. Nokogiri `1.13.8` and `1.13.9` fail to check the return value from `xmlTextReaderExpand` in the method `Nokogiri::XML::Reader#attribute_hash`. This can lead to a null pointer exception when invalid markup is being parsed. For applications using `XML::Reader` to parse untrusted inputs, this may potentially be a vector for a denial of service attack. Users are advised to upgrade to Nokogiri `\u003e= 1.13.10`. Users may be able to search their code for calls to either `XML::Reader#attributes` or `XML::Reader#attribute_hash` to determine if they are affected."
          }
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            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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            "version": "3.1"
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            "description": [
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                "lang": "eng",
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            "url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-qv4q-mr5r-qprj"
          },
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            "refsource": "MISC",
            "url": "https://github.com/sparklemotion/nokogiri/commit/85410e38410f670cbbc8c5b00d07b843caee88ce"
          },
          {
            "name": "https://github.com/sparklemotion/nokogiri/commit/9fe0761c47c0d4270d1a5220cfd25de080350d50",
            "refsource": "MISC",
            "url": "https://github.com/sparklemotion/nokogiri/commit/9fe0761c47c0d4270d1a5220cfd25de080350d50"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-qv4q-mr5r-qprj",
        "discovery": "UNKNOWN"
      }
    },
    "github.com/rubysec/ruby-advisory-db": {
      "cve": "2022-23476",
      "cvss_v3": 7.5,
      "date": "2022-12-07",
      "description": "## Summary\n\nNokogiri `1.13.8, 1.13.9` fails to check the return value from `xmlTextReaderExpand` in the method `Nokogiri::XML::Reader#attribute_hash`. This can lead to a null pointer exception when invalid markup is being parsed.\n\nFor applications using `XML::Reader` to parse untrusted inputs, this may potentially be a vector for a denial of service attack.\n\n\n## Mitigation\n\nUpgrade to Nokogiri `\u003e= 1.13.10`.\n\nUsers may be able to search their code for calls to either `XML::Reader#attributes` or `XML::Reader#attribute_hash` to determine if they are affected.\n\n\n## Severity\n\nThe Nokogiri maintainers have evaluated this as [High Severity 7.5 (CVSS3.1)](https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).\n\n\n## References\n\n- [CWE - CWE-252: Unchecked Return Value (4.9)](https://cwe.mitre.org/data/definitions/252.html)\n- [CWE - CWE-476: NULL Pointer Dereference (4.9)](https://cwe.mitre.org/data/definitions/476.html)\n\n\n## Credit\n\nThis vulnerability was responsibly reported by @davidwilemski.\n",
      "gem": "nokogiri",
      "ghsa": "qv4q-mr5r-qprj",
      "patched_versions": [
        "\u003e= 1.13.10"
      ],
      "title": "Unchecked return value from xmlTextReaderExpand",
      "unaffected_versions": [
        "\u003c= 1.13.7"
      ],
      "url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-qv4q-mr5r-qprj"
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003e=1.13.8 \u003c=1.13.9",
          "affected_versions": "All versions starting from 1.13.8 up to 1.13.9",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "cwe_ids": [
            "CWE-1035",
            "CWE-476",
            "CWE-937"
          ],
          "date": "2022-12-10",
          "description": "Nokogiri is an open source XML and HTML library for the Ruby programming language. Nokogiri `1.13.8` and `1.13.9` fail to check the return value from `xmlTextReaderExpand` in the method `Nokogiri::XML::Reader#attribute_hash`. This can lead to a null pointer exception when invalid markup is being parsed. For applications using `XML::Reader` to parse untrusted inputs, this may potentially be a vector for a denial of service attack. Users are advised to upgrade to Nokogiri `\u003e= 1.13.10`. Users may be able to search their code for calls to either `XML::Reader#attributes` or `XML::Reader#attribute_hash` to determine if they are affected.",
          "fixed_versions": [
            "1.13.10"
          ],
          "identifier": "CVE-2022-23476",
          "identifiers": [
            "CVE-2022-23476",
            "GHSA-qv4q-mr5r-qprj"
          ],
          "not_impacted": "All versions before 1.13.8, all versions after 1.13.9",
          "package_slug": "gem/nokogiri",
          "pubdate": "2022-12-08",
          "solution": "Upgrade to version 1.13.10 or above.",
          "title": "Unchecked Return Value",
          "urls": [
            "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-qv4q-mr5r-qprj",
            "https://github.com/sparklemotion/nokogiri/commit/85410e38410f670cbbc8c5b00d07b843caee88ce",
            "https://github.com/sparklemotion/nokogiri/commit/9fe0761c47c0d4270d1a5220cfd25de080350d50",
            "https://nvd.nist.gov/vuln/detail/CVE-2022-23476",
            "https://github.com/rubysec/ruby-advisory-db/blob/master/gems/nokogiri/CVE-2022-23476.yml",
            "https://github.com/advisories/GHSA-qv4q-mr5r-qprj"
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          "uuid": "b785391f-888a-4a7d-a576-4c4734e9bc10"
        }
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      "impact": {
        "baseMetricV3": {
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            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2022-12-10T03:10Z",
      "publishedDate": "2022-12-08T04:15Z"
    }
  }
}


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