Vulnerability-Lookup

CNVD-2021-40522

Vulnerability from cnvd - Published: 2021-06-09

Title

Mathias Buus dns-packet存在未明漏洞

Description

dns-packet是一个应用软件。一个抽象的编码为编码/解码DNS数据包的依从模型。 Mathias Buus dns-packet 5.2.2之前版本存在安全漏洞，攻击者可利用该漏洞通过未加密的网络暴露内部应用程序内存。

Severity

中

Patch Name

Mathias Buus dns-packet存在未明漏洞的补丁

Patch Description

dns-packet是一个应用软件。一个抽象的编码为编码/解码DNS数据包的依从模型。 Mathias Buus dns-packet 5.2.2之前版本存在安全漏洞，攻击者可利用该漏洞通过未加密的网络暴露内部应用程序内存。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/mafintosh/dns-packet/commit/25f15dd0fedc53688b25fd053ebbdffe3d5c1c56

Reference

https://github.com/mafintosh/dns-packet/commit/25f15dd0fedc53688b25fd053ebbdffe3d5c1c56

Impacted products

Name
Mathias Buus dns-packet <5.2.2

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-23386",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-23386"
    }
  },
  "description": "dns-packet\u662f\u4e00\u4e2a\u5e94\u7528\u8f6f\u4ef6\u3002\u4e00\u4e2a\u62bd\u8c61\u7684\u7f16\u7801\u4e3a\u7f16\u7801/\u89e3\u7801DNS\u6570\u636e\u5305\u7684\u4f9d\u4ece\u6a21\u578b\u3002\n\nMathias Buus dns-packet 5.2.2\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u672a\u52a0\u5bc6\u7684\u7f51\u7edc\u66b4\u9732\u5185\u90e8\u5e94\u7528\u7a0b\u5e8f\u5185\u5b58\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://github.com/mafintosh/dns-packet/commit/25f15dd0fedc53688b25fd053ebbdffe3d5c1c56",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-40522",
  "openTime": "2021-06-09",
  "patchDescription": "dns-packet\u662f\u4e00\u4e2a\u5e94\u7528\u8f6f\u4ef6\u3002\u4e00\u4e2a\u62bd\u8c61\u7684\u7f16\u7801\u4e3a\u7f16\u7801/\u89e3\u7801DNS\u6570\u636e\u5305\u7684\u4f9d\u4ece\u6a21\u578b\u3002\r\n\r\nMathias Buus dns-packet 5.2.2\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u901a\u8fc7\u672a\u52a0\u5bc6\u7684\u7f51\u7edc\u66b4\u9732\u5185\u90e8\u5e94\u7528\u7a0b\u5e8f\u5185\u5b58\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Mathias Buus dns-packet\u5b58\u5728\u672a\u660e\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Mathias Buus dns-packet \u003c5.2.2"
  },
  "referenceLink": "https://github.com/mafintosh/dns-packet/commit/25f15dd0fedc53688b25fd053ebbdffe3d5c1c56",
  "serverity": "\u4e2d",
  "submitTime": "2021-05-25",
  "title": "Mathias Buus dns-packet\u5b58\u5728\u672a\u660e\u6f0f\u6d1e"
}

CVE-2021-23386 (GCVE-0-2021-23386)

Vulnerability from cvelistv5 – Published: 2021-05-20 16:15 – Updated: 2024-09-16 20:52

Title

Remote Memory Exposure

Summary

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.

Severity

7.7 (High)


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

CWE

Remote Memory Exposure

Assigner

snyk mitre root

References

4 references

URL	Tags
https://snyk.io/vuln/SNYK-JS-DNSPACKET-1293563	x_refsource_MISC
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1295719	x_refsource_MISC
https://hackerone.com/bugs?subject=user&amp%3Brep…	x_refsource_MISC
https://github.com/mafintosh/dns-packet/commit/25…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	dns-packet	Affected: unspecified , < 5.2.2 (custom)

Date Public

2021-05-20 00:00

Credits

chalker

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T19:05:56.090Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://snyk.io/vuln/SNYK-JS-DNSPACKET-1293563"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1295719"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://hackerone.com/bugs?subject=user\u0026amp%3Breport_id=968858"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/mafintosh/dns-packet/commit/25f15dd0fedc53688b25fd053ebbdffe3d5c1c56"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "dns-packet",
          "vendor": "n/a",
          "versions": [
            {
              "lessThan": "5.2.2",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "chalker"
        }
      ],
      "datePublic": "2021-05-20T00:00:00.000Z",
      "descriptions": [
        {
          "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Remote Memory Exposure",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-05-20T16:15:18.000Z",
        "orgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
        "shortName": "snyk"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://snyk.io/vuln/SNYK-JS-DNSPACKET-1293563"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1295719"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://hackerone.com/bugs?subject=user\u0026amp%3Breport_id=968858"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/mafintosh/dns-packet/commit/25f15dd0fedc53688b25fd053ebbdffe3d5c1c56"
        }
      ],
      "title": "Remote Memory Exposure",
      "x_legacyV4Record": {
        "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"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730",
    "assignerShortName": "snyk",
    "cveId": "CVE-2021-23386",
    "datePublished": "2021-05-20T16:15:18.500Z",
    "dateReserved": "2021-01-08T00:00:00.000Z",
    "dateUpdated": "2024-09-16T20:52:54.669Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.