gsd-2021-41098
Vulnerability from gsd
Modified
2021-09-27 00:00
Details
### Severity The Nokogiri maintainers have evaluated this as [**High Severity** 7.5 (CVSS3.0)](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:H/RL:O/RC:C/MAV:N/MAC:L) for JRuby users. (This security advisory does not apply to CRuby users.) ### Impact In Nokogiri v1.12.4 and earlier, **on JRuby only**, the SAX parser resolves external entities by default. Users of Nokogiri on JRuby who parse untrusted documents using any of these classes are affected: - Nokogiri::XML::SAX::Parser - Nokogiri::HTML4::SAX::Parser or its alias Nokogiri::HTML::SAX::Parser - Nokogiri::XML::SAX::PushParser - Nokogiri::HTML4::SAX::PushParser or its alias Nokogiri::HTML::SAX::PushParser ### Mitigation JRuby users should upgrade to Nokogiri v1.12.5 or later. There are no workarounds available for v1.12.4 or earlier. CRuby users are not affected.
Aliases
Aliases
CVE-2021-41098


To clipboard 

{
  "GSD": {
    "alias": "CVE-2021-41098",
    "description": "Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri v1.12.4 and earlier, on JRuby only, the SAX parser resolves external entities by default. Users of Nokogiri on JRuby who parse untrusted documents using any of these classes are affected: Nokogiri::XML::SAX::Parse, Nokogiri::HTML4::SAX::Parser or its alias Nokogiri::HTML::SAX::Parser, Nokogiri::XML::SAX::PushParser, and Nokogiri::HTML4::SAX::PushParser or its alias Nokogiri::HTML::SAX::PushParser. JRuby users should upgrade to Nokogiri v1.12.5 or later to receive a patch for this issue. There are no workarounds available for v1.12.4 or earlier. CRuby users are not affected.",
    "id": "GSD-2021-41098",
    "references": [
      "https://www.suse.com/security/cve/CVE-2021-41098.html",
      "https://security.archlinux.org/CVE-2021-41098"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "nokogiri",
            "purl": "pkg:gem/nokogiri"
          }
        }
      ],
      "aliases": [
        "CVE-2021-41098",
        "GHSA-2rr5-8q37-2w7h"
      ],
      "details": "### Severity\n\nThe Nokogiri maintainers have evaluated this as [**High Severity** 7.5 (CVSS3.0)](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:H/RL:O/RC:C/MAV:N/MAC:L) for JRuby users. (This security advisory does not apply to CRuby users.)\n\n### Impact\n\nIn Nokogiri v1.12.4 and earlier, **on JRuby only**, the SAX parser resolves external entities by default.\n\nUsers of Nokogiri on JRuby who parse untrusted documents using any of these classes are affected:\n\n- Nokogiri::XML::SAX::Parser\n- Nokogiri::HTML4::SAX::Parser or its alias Nokogiri::HTML::SAX::Parser\n- Nokogiri::XML::SAX::PushParser\n- Nokogiri::HTML4::SAX::PushParser or its alias Nokogiri::HTML::SAX::PushParser\n\n### Mitigation\n\nJRuby users should upgrade to Nokogiri v1.12.5 or later. There are no workarounds available for v1.12.4 or earlier.\n\nCRuby users are not affected.",
      "id": "GSD-2021-41098",
      "modified": "2021-09-27T00:00:00.000Z",
      "published": "2021-09-27T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h"
        }
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 7.5,
          "type": "CVSS_V3"
        }
      ],
      "summary": "Improper Restriction of XML External Entity Reference (XXE) in Nokogiri on JRuby"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security-advisories@github.com",
        "ID": "CVE-2021-41098",
        "STATE": "PUBLIC",
        "TITLE": "Improper Restriction of XML External Entity Reference (XXE) in Nokogiri on JRuby"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "nokogiri",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003c 1.12.5"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "sparklemotion"
            }
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      "description": {
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            "lang": "eng",
            "value": "Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri v1.12.4 and earlier, on JRuby only, the SAX parser resolves external entities by default. Users of Nokogiri on JRuby who parse untrusted documents using any of these classes are affected: Nokogiri::XML::SAX::Parse, Nokogiri::HTML4::SAX::Parser or its alias Nokogiri::HTML::SAX::Parser, Nokogiri::XML::SAX::PushParser, and Nokogiri::HTML4::SAX::PushParser or its alias Nokogiri::HTML::SAX::PushParser. JRuby users should upgrade to Nokogiri v1.12.5 or later to receive a patch for this issue. There are no workarounds available for v1.12.4 or earlier. CRuby users are not affected."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "version": "3.0"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "CWE-611: Improper Restriction of XML External Entity Reference"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h",
            "refsource": "CONFIRM",
            "url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h"
          },
          {
            "name": "https://github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6d",
            "refsource": "MISC",
            "url": "https://github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6d"
          }
        ]
      },
      "source": {
        "advisory": "GHSA-2rr5-8q37-2w7h",
        "discovery": "UNKNOWN"
      }
    },
    "github.com/rubysec/ruby-advisory-db": {
      "cve": "2021-41098",
      "cvss_v3": 7.5,
      "date": "2021-09-27",
      "description": "### Severity\n\nThe Nokogiri maintainers have evaluated this as [**High Severity** 7.5 (CVSS3.0)](https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:H/RL:O/RC:C/MAV:N/MAC:L) for JRuby users. (This security advisory does not apply to CRuby users.)\n\n### Impact\n\nIn Nokogiri v1.12.4 and earlier, **on JRuby only**, the SAX parser resolves external entities by default.\n\nUsers of Nokogiri on JRuby who parse untrusted documents using any of these classes are affected:\n\n- Nokogiri::XML::SAX::Parser\n- Nokogiri::HTML4::SAX::Parser or its alias Nokogiri::HTML::SAX::Parser\n- Nokogiri::XML::SAX::PushParser\n- Nokogiri::HTML4::SAX::PushParser or its alias Nokogiri::HTML::SAX::PushParser\n\n### Mitigation\n\nJRuby users should upgrade to Nokogiri v1.12.5 or later. There are no workarounds available for v1.12.4 or earlier.\n\nCRuby users are not affected.",
      "gem": "nokogiri",
      "ghsa": "2rr5-8q37-2w7h",
      "patched_versions": [
        "\u003e= 1.12.5"
      ],
      "platform": "jruby",
      "title": "Improper Restriction of XML External Entity Reference (XXE) in Nokogiri on JRuby",
      "url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h"
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c1.12.5",
          "affected_versions": "All versions before 1.12.5",
          "cvss_v2": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-937"
          ],
          "date": "2021-10-06",
          "description": "Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri v1.12.4, on JRuby only, the SAX parser resolves external entities by default. Users of Nokogiri on JRuby who parse untrusted documents using any of these classes are affected: Nokogiri::XML::SAX::Parse, Nokogiri::HTML4::SAX::Parser or its alias Nokogiri::HTML::SAX::Parser, Nokogiri::XML::SAX::PushParser, and Nokogiri::HTML4::SAX::PushParser or its alias Nokogiri::HTML::SAX::PushParser. JRuby users should upgrade to Nokogiri.",
          "fixed_versions": [
            "1.12.5"
          ],
          "identifier": "CVE-2021-41098",
          "identifiers": [
            "CVE-2021-41098",
            "GHSA-2rr5-8q37-2w7h"
          ],
          "not_impacted": "All versions starting from 1.12.5",
          "package_slug": "gem/nokogiri",
          "pubdate": "2021-09-27",
          "solution": "Upgrade to version 1.12.5 or above.",
          "title": "Improper Restriction of XML External Entity Reference",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-41098"
          ],
          "uuid": "12fdcdf1-df43-4ca6-a348-51a7837ad1fa"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:nokogiri:nokogiri:*:*:*:*:*:ruby:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.12.5",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-41098"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Nokogiri is a Rubygem providing HTML, XML, SAX, and Reader parsers with XPath and CSS selector support. In Nokogiri v1.12.4 and earlier, on JRuby only, the SAX parser resolves external entities by default. Users of Nokogiri on JRuby who parse untrusted documents using any of these classes are affected: Nokogiri::XML::SAX::Parse, Nokogiri::HTML4::SAX::Parser or its alias Nokogiri::HTML::SAX::Parser, Nokogiri::XML::SAX::PushParser, and Nokogiri::HTML4::SAX::PushParser or its alias Nokogiri::HTML::SAX::PushParser. JRuby users should upgrade to Nokogiri v1.12.5 or later to receive a patch for this issue. There are no workarounds available for v1.12.4 or earlier. CRuby users are not affected."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-611"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6d",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6d"
            },
            {
              "name": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h",
              "refsource": "CONFIRM",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "NONE",
            "baseScore": 5.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-10-06T20:17Z",
      "publishedDate": "2021-09-27T20:15Z"
    }
  }
}


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