GSD-2021-23386

Vulnerability from gsd - Updated: 2023-12-13 01:23
Details
This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names.
Aliases
Aliases
CVE-2021-23386
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{
  "GSD": {
    "alias": "CVE-2021-23386",
    "description": "This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names.",
    "id": "GSD-2021-23386"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-23386"
      ],
      "details": "This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names.",
      "id": "GSD-2021-23386",
      "modified": "2023-12-13T01:23:30.307989Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "report@snyk.io",
        "DATE_PUBLIC": "2021-05-20T16:12:28.962988Z",
        "ID": "CVE-2021-23386",
        "STATE": "PUBLIC",
        "TITLE": "Remote Memory Exposure"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "dns-packet",
                    "version": {
                      "version_data": [
                        {
                          "version_affected": "\u003c",
                          "version_value": "5.2.2"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
        }
      },
      "credit": [
        {
          "lang": "eng",
          "value": "chalker"
        }
      ],
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names."
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "HIGH",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.7,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:L",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Remote Memory Exposure"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://snyk.io/vuln/SNYK-JS-DNSPACKET-1293563",
            "refsource": "MISC",
            "url": "https://snyk.io/vuln/SNYK-JS-DNSPACKET-1293563"
          },
          {
            "name": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1295719",
            "refsource": "MISC",
            "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1295719"
          },
          {
            "name": "https://hackerone.com/bugs?subject=user\u0026amp%3Breport_id=968858",
            "refsource": "MISC",
            "url": "https://hackerone.com/bugs?subject=user\u0026amp%3Breport_id=968858"
          },
          {
            "name": "https://github.com/mafintosh/dns-packet/commit/25f15dd0fedc53688b25fd053ebbdffe3d5c1c56",
            "refsource": "MISC",
            "url": "https://github.com/mafintosh/dns-packet/commit/25f15dd0fedc53688b25fd053ebbdffe3d5c1c56"
          }
        ]
      }
    },
    "gitlab.com": {
      "advisories": [
        {
          "affected_range": "\u003c1.3.4||\u003e=2.0.0 \u003c5.2.2",
          "affected_versions": "All versions before 1.3.4, all versions starting from 2.0.0 before 5.2.2",
          "cvss_v2": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
          "cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
          "cwe_ids": [
            "CWE-1035",
            "CWE-909",
            "CWE-937"
          ],
          "date": "2022-07-12",
          "description": "This affects the package dns-packet It creates buffers with `allocUnsafe` and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names.",
          "fixed_versions": [
            "1.3.4",
            "5.2.2"
          ],
          "identifier": "CVE-2021-23386",
          "identifiers": [
            "CVE-2021-23386"
          ],
          "not_impacted": "All versions starting from 1.3.4 before 2.0.0, all versions starting from 5.2.2",
          "package_slug": "npm/dns-packet",
          "pubdate": "2021-05-20",
          "solution": "Upgrade to versions 1.3.4, 5.2.2 or above.",
          "title": "Information Exposure",
          "urls": [
            "https://nvd.nist.gov/vuln/detail/CVE-2021-23386"
          ],
          "uuid": "bf9b55a4-6082-4186-9b7c-aeb0a6e3a96d"
        }
      ]
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:dns-packet_project:dns-packet:*:*:*:*:*:node.js:*:*",
                "cpe_name": [],
                "versionEndExcluding": "1.3.4",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:dns-packet_project:dns-packet:*:*:*:*:*:node.js:*:*",
                "cpe_name": [],
                "versionEndExcluding": "5.2.2",
                "versionStartIncluding": "2.0.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "report@snyk.io",
          "ID": "CVE-2021-23386"
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "This affects the package dns-packet before 5.2.2. It creates buffers with allocUnsafe and does not always fill them before forming network packets. This can expose internal application memory over unencrypted network when querying crafted invalid domain names."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-200"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1295719",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1295719"
            },
            {
              "name": "https://snyk.io/vuln/SNYK-JS-DNSPACKET-1293563",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://snyk.io/vuln/SNYK-JS-DNSPACKET-1293563"
            },
            {
              "name": "https://hackerone.com/bugs?subject=user\u0026amp%3Breport_id=968858",
              "refsource": "MISC",
              "tags": [
                "Permissions Required",
                "Third Party Advisory"
              ],
              "url": "https://hackerone.com/bugs?subject=user\u0026amp%3Breport_id=968858"
            },
            {
              "name": "https://github.com/mafintosh/dns-packet/commit/25f15dd0fedc53688b25fd053ebbdffe3d5c1c56",
              "refsource": "MISC",
              "tags": [
                "Patch",
                "Third Party Advisory"
              ],
              "url": "https://github.com/mafintosh/dns-packet/commit/25f15dd0fedc53688b25fd053ebbdffe3d5c1c56"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "SINGLE",
            "availabilityImpact": "NONE",
            "baseScore": 4.0,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:N",
            "version": "2.0"
          },
          "exploitabilityScore": 8.0,
          "impactScore": 2.9,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "MEDIUM",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
            "version": "3.1"
          },
          "exploitabilityScore": 2.8,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2021-06-01T13:59Z",
      "publishedDate": "2021-05-20T17:15Z"
    }
  }
}


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  • 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.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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