Vulnerability-Lookup

oesa-2021-1396

Vulnerability from osv_openeuler

Published

2021-10-19 11:04

Modified

2026-08-06 11:04

Summary

rubygem-nokogiri security update

Details

Nokogiri parses and searches XML/HTML very quickly, and also has correctly implemented CSS3 selector support as well as XPath support. Nokogiri also features an Hpricot compatibility layer to help ease the change to using correct CSS and XPath. %if 0

Security Fix(es):

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.(CVE-2021-41098)

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-41098	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "rubygem-nokogiri-debuginfo-1.10.5-3.oe1.aarch64.rpm",
          "rubygem-nokogiri-1.10.5-3.oe1.aarch64.rpm",
          "rubygem-nokogiri-doc-1.10.5-3.oe1.aarch64.rpm",
          "rubygem-nokogiri-debugsource-1.10.5-3.oe1.aarch64.rpm"
        ],
        "src": [
          "rubygem-nokogiri-1.10.5-3.oe1.src.rpm"
        ],
        "x86_64": [
          "rubygem-nokogiri-doc-1.10.5-3.oe1.x86_64.rpm",
          "rubygem-nokogiri-debugsource-1.10.5-3.oe1.x86_64.rpm",
          "rubygem-nokogiri-debuginfo-1.10.5-3.oe1.x86_64.rpm",
          "rubygem-nokogiri-1.10.5-3.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "rubygem-nokogiri",
        "purl": "pkg:rpm/openEuler/rubygem-nokogiri\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.10.5-3.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "rubygem-nokogiri-1.10.5-3.oe1.aarch64.rpm",
          "rubygem-nokogiri-debuginfo-1.10.5-3.oe1.aarch64.rpm",
          "rubygem-nokogiri-doc-1.10.5-3.oe1.aarch64.rpm",
          "rubygem-nokogiri-debugsource-1.10.5-3.oe1.aarch64.rpm"
        ],
        "src": [
          "rubygem-nokogiri-1.10.5-3.oe1.src.rpm"
        ],
        "x86_64": [
          "rubygem-nokogiri-1.10.5-3.oe1.x86_64.rpm",
          "rubygem-nokogiri-doc-1.10.5-3.oe1.x86_64.rpm",
          "rubygem-nokogiri-debuginfo-1.10.5-3.oe1.x86_64.rpm",
          "rubygem-nokogiri-debugsource-1.10.5-3.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP2",
        "name": "rubygem-nokogiri",
        "purl": "pkg:rpm/openEuler/rubygem-nokogiri\u0026distro=openEuler-20.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.10.5-3.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Nokogiri parses and searches XML/HTML very quickly, and also has correctly implemented CSS3 selector support as well as XPath support. Nokogiri also features an Hpricot compatibility layer to help ease the change to using correct CSS and XPath. %if 0\r\n\r\nSecurity Fix(es):\r\n\r\nNokogiri 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.(CVE-2021-41098)",
  "id": "OESA-2021-1396",
  "modified": "2026-08-06T11:04:40Z",
  "published": "2021-10-19T11:04:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1396"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-41098"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "rubygem-nokogiri security update",
  "upstream": [
    "CVE-2021-41098"
  ]
}

CVE-2021-41098 (GCVE-0-2021-41098)

Vulnerability from cvelistv5 – Published: 2021-09-27 19:35 – Updated: 2024-08-04 02:59

Title

Improper Restriction of XML External Entity Reference (XXE) in Nokogiri on JRuby

Summary

Severity

7.5 (High)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CWE

CWE-611 - Improper Restriction of XML External Entity Reference

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/sparklemotion/nokogiri/securit…	x_refsource_CONFIRM
https://github.com/sparklemotion/nokogiri/commit/…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
sparklemotion	nokogiri	Affected: < 1.12.5

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T02:59:31.455Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
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            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6d"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "nokogiri",
          "vendor": "sparklemotion",
          "versions": [
            {
              "status": "affected",
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            }
          ]
        }
      ],
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        {
          "lang": "en",
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        }
      ],
      "metrics": [
        {
          "cvssV3_0": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-611",
              "description": "CWE-611: Improper Restriction of XML External Entity Reference",
              "lang": "en",
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            }
          ]
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      ],
      "providerMetadata": {
        "dateUpdated": "2021-09-27T19:35:11.000Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6d"
        }
      ],
      "source": {
        "advisory": "GHSA-2rr5-8q37-2w7h",
        "discovery": "UNKNOWN"
      },
      "title": "Improper Restriction of XML External Entity Reference (XXE) in Nokogiri on JRuby",
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security-advisories@github.com",
          "ID": "CVE-2021-41098",
          "STATE": "PUBLIC",
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        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "nokogiri",
                      "version": {
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                          {
                            "version_value": "\u003c 1.12.5"
                          }
                        ]
                      }
                    }
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                },
                "vendor_name": "sparklemotion"
              }
            ]
          }
        },
        "data_format": "MITRE",
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        "description": {
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            }
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        },
        "impact": {
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        "problemtype": {
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        "references": {
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              "name": "https://github.com/sparklemotion/nokogiri/security/advisories/GHSA-2rr5-8q37-2w7h",
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            },
            {
              "name": "https://github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6d",
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              "url": "https://github.com/sparklemotion/nokogiri/commit/5bf729ff3cc84709ee3c3248c981584088bf9f6d"
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  },
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    "dateReserved": "2021-09-15T00:00:00.000Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
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}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.