Vulnerability-Lookup

CVE-2021-39923 (GCVE-0-2021-39923)

Vulnerability from cvelistv5 – Published: 2021-11-19 16:31 – Updated: 2024-08-04 02:20

Summary

Large loop in the PNRP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file

Severity

7.5 (High)


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

CWE

Excessive iteration in Wireshark

Assigner

GitLab mitre root

References

5 references

URL	Tags
https://gitlab.com/gitlab-org/cves/-/blob/master/…	x_refsource_CONFIRM
https://www.wireshark.org/security/wnpa-sec-2021-…	x_refsource_MISC
https://gitlab.com/wireshark/wireshark/-/issues/17684	x_refsource_MISC
https://www.debian.org/security/2021/dsa-5019	vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2021…	mailing-listx_refsource_MLIST

Impacted products

1 product

Vendor	Product	Version	CPE status
Wireshark Foundation	Wireshark	Affected: >=3.2.0, <3.2.18 Affected: >=3.4.0, <3.4.10	guessed

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      "status": "interim",
      "title": "SUSE CVE CVE-2021-39923",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-39923.json",
      "version": "15"
    }
  }
}

CNVD-2021-90092

Vulnerability from cnvd - Published: 2021-11-23

Title

Wireshark空指针解引用漏洞（CNVD-2021-90092）

Description

Wireshark是一款网络封包分析软件。网络封包分析软件的功能是撷取网络封包，并尽可能显示出最为详细的网络封包资料。Wireshark使用WinPCAP作为接口，直接与网卡进行数据报文交换。 Wireshark 3.4.0 - 3.4.9版中的IPPUSB解析器存在空指针解引用漏洞。攻击者可通过数据包注入或特制捕获文件利用该漏洞导致拒绝服务。

Severity

高

Patch Name

Wireshark空指针解引用漏洞（CNVD-2021-90092）的补丁

Patch Description

Formal description

厂商已发布了漏洞修复程序，请及时关注更新： https://www.wireshark.org/security/wnpa-sec-2021-15.html

Reference

https://nvd.nist.gov/vuln/detail/CVE-2021-39923

Impacted products

Name
Wireshark Wireshark >=3.4.0，<=3.4.9

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-39923",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-39923"
    }
  },
  "description": "Wireshark\u662f\u4e00\u6b3e\u7f51\u7edc\u5c01\u5305\u5206\u6790\u8f6f\u4ef6\u3002\u7f51\u7edc\u5c01\u5305\u5206\u6790\u8f6f\u4ef6\u7684\u529f\u80fd\u662f\u64b7\u53d6\u7f51\u7edc\u5c01\u5305\uff0c\u5e76\u5c3d\u53ef\u80fd\u663e\u793a\u51fa\u6700\u4e3a\u8be6\u7ec6\u7684\u7f51\u7edc\u5c01\u5305\u8d44\u6599\u3002Wireshark\u4f7f\u7528WinPCAP\u4f5c\u4e3a\u63a5\u53e3\uff0c\u76f4\u63a5\u4e0e\u7f51\u5361\u8fdb\u884c\u6570\u636e\u62a5\u6587\u4ea4\u6362\u3002\n\nWireshark 3.4.0 - 3.4.9\u7248\u4e2d\u7684IPPUSB\u89e3\u6790\u5668\u5b58\u5728\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u6570\u636e\u5305\u6ce8\u5165\u6216\u7279\u5236\u6355\u83b7\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://www.wireshark.org/security/wnpa-sec-2021-15.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-90092",
  "openTime": "2021-11-23",
  "patchDescription": "Wireshark\u662f\u4e00\u6b3e\u7f51\u7edc\u5c01\u5305\u5206\u6790\u8f6f\u4ef6\u3002\u7f51\u7edc\u5c01\u5305\u5206\u6790\u8f6f\u4ef6\u7684\u529f\u80fd\u662f\u64b7\u53d6\u7f51\u7edc\u5c01\u5305\uff0c\u5e76\u5c3d\u53ef\u80fd\u663e\u793a\u51fa\u6700\u4e3a\u8be6\u7ec6\u7684\u7f51\u7edc\u5c01\u5305\u8d44\u6599\u3002Wireshark\u4f7f\u7528WinPCAP\u4f5c\u4e3a\u63a5\u53e3\uff0c\u76f4\u63a5\u4e0e\u7f51\u5361\u8fdb\u884c\u6570\u636e\u62a5\u6587\u4ea4\u6362\u3002\r\n\r\nWireshark 3.4.0 - 3.4.9\u7248\u4e2d\u7684IPPUSB\u89e3\u6790\u5668\u5b58\u5728\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u6570\u636e\u5305\u6ce8\u5165\u6216\u7279\u5236\u6355\u83b7\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\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": "Wireshark\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\uff08CNVD-2021-90092\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Wireshark Wireshark \u003e=3.4.0\uff0c\u003c=3.4.9"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-39923",
  "serverity": "\u9ad8",
  "submitTime": "2021-11-22",
  "title": "Wireshark\u7a7a\u6307\u9488\u89e3\u5f15\u7528\u6f0f\u6d1e\uff08CNVD-2021-90092\uff09"
}

FKIE_CVE-2021-39923

Vulnerability from fkie_nvd - Published: 2021-11-19 17:15 - Updated: 2026-06-17 04:04

Severity

7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

Large loop in the PNRP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file

References

URL	Tags
cve@gitlab.com	https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.json	Third Party Advisory
cve@gitlab.com	https://gitlab.com/wireshark/wireshark/-/issues/17684	Issue Tracking, Patch, Vendor Advisory
cve@gitlab.com	https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html	Mailing List, Third Party Advisory
cve@gitlab.com	https://www.debian.org/security/2021/dsa-5019	Third Party Advisory
cve@gitlab.com	https://www.wireshark.org/security/wnpa-sec-2021-11.html	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.json	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://gitlab.com/wireshark/wireshark/-/issues/17684	Issue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2021/dsa-5019	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.wireshark.org/security/wnpa-sec-2021-11.html	Vendor Advisory

Impacted products

Vendor	Product	Version
wireshark	wireshark	*
wireshark	wireshark	*
debian	debian_linux	10.0
debian	debian_linux	11.0
debian	debian_linux	9.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Wireshark",
          "vendor": "Wireshark Foundation",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e=3.2.0, \u003c3.2.18"
            },
            {
              "status": "affected",
              "version": "\u003e=3.4.0, \u003c3.4.10"
            }
          ]
        }
      ],
      "source": "cve@gitlab.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "D7CE273F-61E9-4B38-B83A-EE5BE6A8E2C0",
              "versionEndIncluding": "3.2.17",
              "versionStartIncluding": "3.2.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "78594687-32B9-4E00-AD24-95D76C66673B",
              "versionEndIncluding": "3.4.9",
              "versionStartIncluding": "3.4.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "FA6FEEC2-9F11-4643-8827-749718254FED",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Large loop in the PNRP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file"
    },
    {
      "lang": "es",
      "value": "Un gran bucle en el disector PNRP en Wireshark versiones 3.4.0 a 3.4.9 y versiones 3.2.0 a 3.2.17 permite la denegaci\u00f3n de servicio a trav\u00e9s de la inyecci\u00f3n de paquetes o un archivo de captura manipulado"
    }
  ],
  "id": "CVE-2021-39923",
  "lastModified": "2026-06-17T04:04:26.030",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "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,
        "source": "cve@gitlab.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "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,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-11-19T17:15:08.457",
  "references": [
    {
      "source": "cve@gitlab.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.json"
    },
    {
      "source": "cve@gitlab.com",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://gitlab.com/wireshark/wireshark/-/issues/17684"
    },
    {
      "source": "cve@gitlab.com",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html"
    },
    {
      "source": "cve@gitlab.com",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2021/dsa-5019"
    },
    {
      "source": "cve@gitlab.com",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.wireshark.org/security/wnpa-sec-2021-11.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.json"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://gitlab.com/wireshark/wireshark/-/issues/17684"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2021/dsa-5019"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://www.wireshark.org/security/wnpa-sec-2021-11.html"
    }
  ],
  "sourceIdentifier": "cve@gitlab.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-834"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-V75M-35PH-56M2

Vulnerability from github – Published: 2021-11-20 00:00 – Updated: 2022-03-17 00:06

Details

NULL pointer exception in the IPPUSB dissector in Wireshark 3.4.0 to 3.4.9 allows denial of service via packet injection or crafted capture file

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2021-39923"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476",
      "CWE-834"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-11-19T17:15:00Z",
    "severity": "HIGH"
  },
  "details": "NULL pointer exception in the IPPUSB dissector in Wireshark 3.4.0 to 3.4.9 allows denial of service via packet injection or crafted capture file",
  "id": "GHSA-v75m-35ph-56m2",
  "modified": "2022-03-17T00:06:43Z",
  "published": "2021-11-20T00:00:52Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-39923"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.json"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/wireshark/wireshark/-/issues/17684"
    },
    {
      "type": "WEB",
      "url": "https://gitlab.com/wireshark/wireshark/-/issues/17705"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A6AJFIYIHS3TYDD2EBYBJ5KKE52X34BJ"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YEWTIRMC2MFQBZ2O5M4CJHJM4JPBHLXH"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2021/dsa-5019"
    },
    {
      "type": "WEB",
      "url": "https://www.wireshark.org/security/wnpa-sec-2021-11.html"
    },
    {
      "type": "WEB",
      "url": "https://www.wireshark.org/security/wnpa-sec-2021-15.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GSD-2021-39923

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Large loop in the PNRP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file

Aliases

CVE-2021-39923

Aliases

CVE-2021-39923

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-39923",
    "description": "Large loop in the PNRP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file",
    "id": "GSD-2021-39923",
    "references": [
      "https://www.debian.org/security/2021/dsa-5019",
      "https://www.suse.com/security/cve/CVE-2021-39923.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-39923"
      ],
      "details": "Large loop in the PNRP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file",
      "id": "GSD-2021-39923",
      "modified": "2023-12-13T01:23:16.108331Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@gitlab.com",
        "ID": "CVE-2021-39923",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Wireshark",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "\u003e=3.2.0, \u003c3.2.18"
                        },
                        {
                          "version_value": "\u003e=3.4.0, \u003c3.4.10"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Wireshark Foundation"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Large loop in the PNRP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file"
          }
        ]
      },
      "impact": {
        "cvss": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        }
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "Excessive iteration in Wireshark"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.json",
            "refsource": "CONFIRM",
            "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.json"
          },
          {
            "name": "https://www.wireshark.org/security/wnpa-sec-2021-11.html",
            "refsource": "MISC",
            "url": "https://www.wireshark.org/security/wnpa-sec-2021-11.html"
          },
          {
            "name": "https://gitlab.com/wireshark/wireshark/-/issues/17684",
            "refsource": "MISC",
            "url": "https://gitlab.com/wireshark/wireshark/-/issues/17684"
          },
          {
            "name": "DSA-5019",
            "refsource": "DEBIAN",
            "url": "https://www.debian.org/security/2021/dsa-5019"
          },
          {
            "name": "[debian-lts-announce] 20211226 [SECURITY] [DLA 2849-1] wireshark security update",
            "refsource": "MLIST",
            "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "3.2.17",
                "versionStartIncluding": "3.2.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:wireshark:wireshark:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndIncluding": "3.4.9",
                "versionStartIncluding": "3.4.0",
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@gitlab.com",
          "ID": "CVE-2021-39923"
        },
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        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "en",
              "value": "Large loop in the PNRP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file"
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-834"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.json",
              "refsource": "CONFIRM",
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                "Third Party Advisory"
              ],
              "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.json"
            },
            {
              "name": "https://www.wireshark.org/security/wnpa-sec-2021-11.html",
              "refsource": "MISC",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://www.wireshark.org/security/wnpa-sec-2021-11.html"
            },
            {
              "name": "https://gitlab.com/wireshark/wireshark/-/issues/17684",
              "refsource": "MISC",
              "tags": [
                "Issue Tracking",
                "Patch",
                "Vendor Advisory"
              ],
              "url": "https://gitlab.com/wireshark/wireshark/-/issues/17684"
            },
            {
              "name": "DSA-5019",
              "refsource": "DEBIAN",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.debian.org/security/2021/dsa-5019"
            },
            {
              "name": "[debian-lts-announce] 20211226 [SECURITY] [DLA 2849-1] wireshark security update",
              "refsource": "MLIST",
              "tags": [
                "Mailing List",
                "Third Party Advisory"
              ],
              "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00015.html"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 5.0,
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
            "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": "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": "2022-03-09T21:42Z",
      "publishedDate": "2021-11-19T17:15Z"
    }
  }
}

MSRC_CVE-2021-39923

Vulnerability from csaf_microsoft - Published: 2021-11-02 00:00 - Updated: 2022-01-19 00:00

Summary

Large loop in the PNRP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file

Scope

1 vulnerability in this advisory, including CVE-2021-39923.

CVE-2021-39923

7.5 (High)


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

Fixed: 1 product Known affected: 1 product

https://learn.microsoft.com/en-us/azure/azure-linux/tutoria…

Open the full advisory

ubuntu-cve-2021-39923

Vulnerability from osv_ubuntu

Published

2021-11-19 17:15

Modified

2026-04-22 07:40

Summary

Details

Large loop in the PNRP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file

Severity

7.5 (High)


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

7.5 (High)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2021-39923	REPORT
	https://gitlab.com/wireshark/wireshark/-/issues/17705	REPORT
	https://www.wireshark.org/security/wnpa-sec-2021-…	REPORT
	https://gitlab.com/gitlab-org/cves/-/blob/master/…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2021-39923	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwireshark-data",
            "binary_version": "2.6.10-1~ubuntu14.04.0~esm3"
          },
          {
            "binary_name": "libwireshark11",
            "binary_version": "2.6.10-1~ubuntu14.04.0~esm3"
          },
          {
            "binary_name": "libwiretap8",
            "binary_version": "2.6.10-1~ubuntu14.04.0~esm3"
          },
          {
            "binary_name": "libwscodecs2",
            "binary_version": "2.6.10-1~ubuntu14.04.0~esm3"
          },
          {
            "binary_name": "libwsutil9",
            "binary_version": "2.6.10-1~ubuntu14.04.0~esm3"
          },
          {
            "binary_name": "tshark",
            "binary_version": "2.6.10-1~ubuntu14.04.0~esm3"
          },
          {
            "binary_name": "wireshark",
            "binary_version": "2.6.10-1~ubuntu14.04.0~esm3"
          },
          {
            "binary_name": "wireshark-common",
            "binary_version": "2.6.10-1~ubuntu14.04.0~esm3"
          },
          {
            "binary_name": "wireshark-gtk",
            "binary_version": "2.6.10-1~ubuntu14.04.0~esm3"
          },
          {
            "binary_name": "wireshark-qt",
            "binary_version": "2.6.10-1~ubuntu14.04.0~esm3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "wireshark",
        "purl": "pkg:deb/ubuntu/wireshark@2.6.10-1~ubuntu14.04.0~esm3?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.10.2-1",
        "1.10.3-1",
        "1.10.5-1ubuntu1",
        "1.10.5-2",
        "1.10.6-1",
        "1.12.1+g01b65bf-4+deb8u11ubuntu0.14.04.1",
        "2.6.3-1~ubuntu14.04.1",
        "2.6.4-2~ubuntu14.04.1",
        "2.6.5-1~ubuntu14.04.1",
        "2.6.6-1~ubuntu14.04.0",
        "2.6.8-1~ubuntu14.04.0~esm1",
        "2.6.10-1~ubuntu14.04.0~esm1",
        "2.6.10-1~ubuntu14.04.0~esm2",
        "2.6.10-1~ubuntu14.04.0~esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwireshark-data",
            "binary_version": "2.6.10-1~ubuntu16.04.0+esm2"
          },
          {
            "binary_name": "libwireshark11",
            "binary_version": "2.6.10-1~ubuntu16.04.0+esm2"
          },
          {
            "binary_name": "libwiretap8",
            "binary_version": "2.6.10-1~ubuntu16.04.0+esm2"
          },
          {
            "binary_name": "libwscodecs2",
            "binary_version": "2.6.10-1~ubuntu16.04.0+esm2"
          },
          {
            "binary_name": "libwsutil9",
            "binary_version": "2.6.10-1~ubuntu16.04.0+esm2"
          },
          {
            "binary_name": "tshark",
            "binary_version": "2.6.10-1~ubuntu16.04.0+esm2"
          },
          {
            "binary_name": "wireshark",
            "binary_version": "2.6.10-1~ubuntu16.04.0+esm2"
          },
          {
            "binary_name": "wireshark-common",
            "binary_version": "2.6.10-1~ubuntu16.04.0+esm2"
          },
          {
            "binary_name": "wireshark-gtk",
            "binary_version": "2.6.10-1~ubuntu16.04.0+esm2"
          },
          {
            "binary_name": "wireshark-qt",
            "binary_version": "2.6.10-1~ubuntu16.04.0+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "wireshark",
        "purl": "pkg:deb/ubuntu/wireshark@2.6.10-1~ubuntu16.04.0+esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.12.7+g7fc8978-1",
        "1.12.8+g5b6e543-2",
        "2.0.1+g59ea380-3build1",
        "2.0.2+ga16e22e-1",
        "2.2.6+g32dac6a-2ubuntu0.16.04",
        "2.6.3-1~ubuntu16.04.1",
        "2.6.4-2~ubuntu16.04.0",
        "2.6.5-1~ubuntu16.04.0",
        "2.6.6-1~ubuntu16.04.0",
        "2.6.8-1~ubuntu16.04.0",
        "2.6.10-1~ubuntu16.04.0",
        "2.6.10-1~ubuntu16.04.0+esm1",
        "2.6.10-1~ubuntu16.04.0+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwireshark-data",
            "binary_version": "2.6.10-1~ubuntu18.04.0+esm2"
          },
          {
            "binary_name": "libwireshark11",
            "binary_version": "2.6.10-1~ubuntu18.04.0+esm2"
          },
          {
            "binary_name": "libwiretap8",
            "binary_version": "2.6.10-1~ubuntu18.04.0+esm2"
          },
          {
            "binary_name": "libwscodecs2",
            "binary_version": "2.6.10-1~ubuntu18.04.0+esm2"
          },
          {
            "binary_name": "libwsutil9",
            "binary_version": "2.6.10-1~ubuntu18.04.0+esm2"
          },
          {
            "binary_name": "tshark",
            "binary_version": "2.6.10-1~ubuntu18.04.0+esm2"
          },
          {
            "binary_name": "wireshark",
            "binary_version": "2.6.10-1~ubuntu18.04.0+esm2"
          },
          {
            "binary_name": "wireshark-common",
            "binary_version": "2.6.10-1~ubuntu18.04.0+esm2"
          },
          {
            "binary_name": "wireshark-gtk",
            "binary_version": "2.6.10-1~ubuntu18.04.0+esm2"
          },
          {
            "binary_name": "wireshark-qt",
            "binary_version": "2.6.10-1~ubuntu18.04.0+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "wireshark",
        "purl": "pkg:deb/ubuntu/wireshark@2.6.10-1~ubuntu18.04.0+esm2?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.4.2-1",
        "2.4.3-1",
        "2.4.4-1",
        "2.4.5-1",
        "2.6.3-1~ubuntu18.04.1",
        "2.6.4-2~ubuntu18.04.0",
        "2.6.5-1~ubuntu18.04.0",
        "2.6.6-1~ubuntu18.04.0",
        "2.6.8-1~ubuntu18.04.0",
        "2.6.10-1~ubuntu18.04.0",
        "2.6.10-1~ubuntu18.04.0+esm1",
        "2.6.10-1~ubuntu18.04.0+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwireshark-data",
            "binary_version": "3.2.3-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "libwireshark13",
            "binary_version": "3.2.3-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "libwiretap10",
            "binary_version": "3.2.3-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "libwsutil11",
            "binary_version": "3.2.3-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "tshark",
            "binary_version": "3.2.3-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "wireshark",
            "binary_version": "3.2.3-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "wireshark-common",
            "binary_version": "3.2.3-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "wireshark-gtk",
            "binary_version": "3.2.3-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "wireshark-qt",
            "binary_version": "3.2.3-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "wireshark",
        "purl": "pkg:deb/ubuntu/wireshark@3.2.3-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
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          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.5-1",
        "3.0.7-1",
        "3.2.1-1",
        "3.2.2-1",
        "3.2.3-1",
        "3.2.3-1ubuntu0.1~esm1",
        "3.2.3-1ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libwireshark-data",
            "binary_version": "3.6.2-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwireshark15",
            "binary_version": "3.6.2-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwiretap12",
            "binary_version": "3.6.2-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "libwsutil13",
            "binary_version": "3.6.2-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "tshark",
            "binary_version": "3.6.2-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "wireshark",
            "binary_version": "3.6.2-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "wireshark-common",
            "binary_version": "3.6.2-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "wireshark-gtk",
            "binary_version": "3.6.2-2ubuntu0.1~esm1"
          },
          {
            "binary_name": "wireshark-qt",
            "binary_version": "3.6.2-2ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "wireshark",
        "purl": "pkg:deb/ubuntu/wireshark@3.6.2-2ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.4.7-1~exp1",
        "3.4.9-1",
        "3.6.2-1ubuntu1",
        "3.6.2-2",
        "3.6.2-2ubuntu0.1~esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "Large loop in the PNRP dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file",
  "id": "UBUNTU-CVE-2021-39923",
  "modified": "2026-04-22T07:40:09Z",
  "published": "2021-11-19T17:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-39923"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.com/wireshark/wireshark/-/issues/17705"
    },
    {
      "type": "REPORT",
      "url": "https://www.wireshark.org/security/wnpa-sec-2021-15.html"
    },
    {
      "type": "REPORT",
      "url": "https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39923.json"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-39923"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-39923"
  ]
}

WID-SEC-W-2022-0302

Vulnerability from csaf_certbund - Published: 2022-06-14 22:00 - Updated: 2025-10-06 22:00

Summary

Xerox FreeFlow Print Server: Mehrere Schwachstellen ermöglichen Ausführen von beliebigem Programmcode mit Administratorrechten

Severity

Hoch

Scope

197 vulnerabilities in this advisory, including CVE-2021-39923.

CVE-2021-39923

Known affected: 2 products

Open the full advisory

WID-SEC-W-2022-0432

Vulnerability from csaf_certbund - Published: 2022-06-21 22:00 - Updated: 2025-10-06 22:00

Summary

Xerox FreeFlow Print Server: Mehrere Schwachstellen

Severity

Hoch

Scope

196 vulnerabilities in this advisory, including CVE-2021-39923.

CVE-2021-39923

Known affected: 2 products

Open the full advisory

WID-SEC-W-2022-1730

Vulnerability from csaf_certbund - Published: 2021-11-17 23:00 - Updated: 2025-06-04 22:00

Summary

Wireshark: Mehrere Schwachstellen ermöglichen Denial of Service

Severity

Mittel

Scope

9 vulnerabilities in this advisory, including CVE-2021-39923.

CVE-2021-39923

Known affected: 7 products

Open the full advisory

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.

Action not permitted

CVE-2021-39923 (GCVE-0-2021-39923)

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature