Vulnerability-Lookup

CVE-2017-8820 (GCVE-0-2017-8820)

Vulnerability from cvelistv5 – Published: 2017-12-03 07:00 – Updated: 2024-08-05 16:48

Summary

In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, remote attackers can cause a denial of service (NULL pointer dereference and application crash) against directory authorities via a malformed descriptor, aka TROVE-2017-010.

Severity

7.5 (High)


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

CWE

denial of service

Assigner

debian mitre root

References

3 references

URL	Tags
https://blog.torproject.org/new-stable-tor-releas…	x_refsource_CONFIRM
https://www.debian.org/security/2017/dsa-4054	vendor-advisoryx_refsource_DEBIAN
https://bugs.torproject.org/24245	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version	CPE status
n/a	Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9	Affected: Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9

Date Public

2017-12-03 00:00

Show details on NVD website

JSON

To clipboard

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      "date": "2026-09-16",
      "epss": "0.01699",
      "percentile": "0.76034"
    },
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    "redhat_vex": {
      "current_release_date": "2025-11-21T16:10:38+00:00",
      "cve": "CVE-2017-8820",
      "id": "CVE-2017-8820",
      "initial_release_date": "2017-12-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "tor: Multiple vulnerabilities",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2017/cve-2017-8820.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2025-03-16T03:05:37Z",
      "cve": "CVE-2017-8820",
      "id": "CVE-2017-8820",
      "initial_release_date": "2023-02-15T04:45:48Z",
      "product_status:recommended": "2",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2017-8820",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2017-8820.json",
      "version": "6"
    }
  }
}

CNVD-2017-38231

Vulnerability from cnvd - Published: 2017-12-27

Title

Tor拒绝服务漏洞（CNVD-2017-38231）

Description

Tor（The Onion Router）是第二代洋葱路由（onion routing）的一种实现，主要用于匿名访问互联网。 Tor存在拒绝服务漏洞。远程攻击者可借助畸形的描述符利用该漏洞造成拒绝服务（空指针逆向引用和应用程序崩溃）。

Severity

中

Patch Name

Tor拒绝服务漏洞（CNVD-2017-38231）的补丁

Patch Description

Tor（The Onion Router）是第二代洋葱路由（onion routing）的一种实现，主要用于匿名访问互联网。 Tor存在拒绝服务漏洞。远程攻击者可借助畸形的描述符利用该漏洞造成拒绝服务（空指针逆向引用和应用程序崩溃）。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

厂商已发布漏洞修复程序，请及时关注更新： https://trac.torproject.org/projects/tor/ticket/24245

Reference

https://nvd.nist.gov/vuln/detail/CVE-2017-8820

Impacted products

Name
['Tor Tor < 0.2.5.16', 'Tor Tor >=0.2.6，<=0.2.8(<0.2.8.17)', 'Tor Tor <=0.2.9，<=0.2.9.14', 'Tor Tor >=0.3.0，<=0.3.0.13', 'Tor Tor >=0.3.1，<=0.3.1.9']

Show details on source website

JSON

To clipboard

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  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-8820"
    }
  },
  "description": "Tor\uff08The Onion Router\uff09\u662f\u7b2c\u4e8c\u4ee3\u6d0b\u8471\u8def\u7531\uff08onion routing\uff09\u7684\u4e00\u79cd\u5b9e\u73b0\uff0c\u4e3b\u8981\u7528\u4e8e\u533f\u540d\u8bbf\u95ee\u4e92\u8054\u7f51\u3002\r\n\r\nTor\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7578\u5f62\u7684\u63cf\u8ff0\u7b26\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\u548c\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\uff09\u3002",
  "discovererName": "Tor",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://trac.torproject.org/projects/tor/ticket/24245",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-38231",
  "openTime": "2017-12-27",
  "patchDescription": "Tor\uff08The Onion Router\uff09\u662f\u7b2c\u4e8c\u4ee3\u6d0b\u8471\u8def\u7531\uff08onion routing\uff09\u7684\u4e00\u79cd\u5b9e\u73b0\uff0c\u4e3b\u8981\u7528\u4e8e\u533f\u540d\u8bbf\u95ee\u4e92\u8054\u7f51\u3002\r\n\r\nTor\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7578\u5f62\u7684\u63cf\u8ff0\u7b26\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\u548c\u5e94\u7528\u7a0b\u5e8f\u5d29\u6e83\uff09\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": "Tor\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2017-38231\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Tor Tor \u003c 0.2.5.16",
      "Tor Tor \u003e=0.2.6\uff0c\u003c=0.2.8(\u003c0.2.8.17)",
      "Tor Tor \u003c=0.2.9\uff0c\u003c=0.2.9.14",
      "Tor Tor \u003e=0.3.0\uff0c\u003c=0.3.0.13",
      "Tor Tor \u003e=0.3.1\uff0c\u003c=0.3.1.9"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2017-8820",
  "serverity": "\u4e2d",
  "submitTime": "2017-12-04",
  "title": "Tor\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2017-38231\uff09"
}

FKIE_CVE-2017-8820

Vulnerability from fkie_nvd - Published: 2017-12-03 07:29 - Updated: 2026-06-17 01:27

Severity

7.5 (High) - CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Summary

References

URL	Tags
security@debian.org	https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516	Vendor Advisory
security@debian.org	https://bugs.torproject.org/24245	Vendor Advisory
security@debian.org	https://www.debian.org/security/2017/dsa-4054	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://bugs.torproject.org/24245	Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2017/dsa-4054	Third Party Advisory

Impacted products

Vendor	Product	Version
tor_project	tor	*
tor_project	tor	*
tor_project	tor	*
tor_project	tor	*
tor_project	tor	*
debian	debian_linux	8.0
debian	debian_linux	9.0

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9"
            }
          ]
        }
      ],
      "source": "security@debian.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:tor_project:tor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "067DE048-F786-4E63-98E6-6FD6415DD3A5",
              "versionEndExcluding": "0.2.5.16",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:tor_project:tor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "5372249B-59F8-4866-B4D3-F52980FCC269",
              "versionEndExcluding": "0.2.8.17",
              "versionStartIncluding": "0.2.6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:tor_project:tor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E0739CCD-DE8F-4A44-91CD-986C4644045F",
              "versionEndExcluding": "0.2.9.14",
              "versionStartIncluding": "0.2.9",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:tor_project:tor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E623D0FC-453C-4D7A-8328-C4C252EEC976",
              "versionEndExcluding": "0.3.0.13",
              "versionStartIncluding": "0.3.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:tor_project:tor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "249879F0-6A12-41C2-9559-020021080696",
              "versionEndExcluding": "0.3.1.9",
              "versionStartIncluding": "0.3.1",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
              "vulnerable": true
            },
            {
              "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": "In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, remote attackers can cause a denial of service (NULL pointer dereference and application crash) against directory authorities via a malformed descriptor, aka TROVE-2017-010."
    },
    {
      "lang": "es",
      "value": "En Tor, en versiones anteriores a la 0.2.5.16; de la versi\u00f3n 0.2.6 hasta la 0.2.8 anterior a la 0.2.8.17, versiones 0.2.9 anteriores a la 0.2.9.14; versiones 0.3.0 anteriores a la 0.3.0.13 y versiones 0.3.1 anteriores a la 0.3.1.9, los atacantes remotos pueden provocar una denegaci\u00f3n de servicio (desreferencia de puntero NULL y cierre inesperado de la aplicaci\u00f3n) contra autoridades de directorio mediante un descriptor mal formado. Esto tambi\u00e9n se conoce como TROVE-2017-010."
    }
  ],
  "id": "CVE-2017-8820",
  "lastModified": "2026-06-17T01:27:01.260",
  "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
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.0"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2017-12-03T07:29:00.333",
  "references": [
    {
      "source": "security@debian.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516"
    },
    {
      "source": "security@debian.org",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://bugs.torproject.org/24245"
    },
    {
      "source": "security@debian.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2017/dsa-4054"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Vendor Advisory"
      ],
      "url": "https://bugs.torproject.org/24245"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://www.debian.org/security/2017/dsa-4054"
    }
  ],
  "sourceIdentifier": "security@debian.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

GHSA-RCR7-P7PF-H84M

Vulnerability from github – Published: 2022-05-17 00:12 – Updated: 2022-05-17 00:12

Details

Severity

7.5 (High)


                  
                    CVSS:3.0/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-2017-8820"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-476"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-12-03T07:29:00Z",
    "severity": "HIGH"
  },
  "details": "In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, remote attackers can cause a denial of service (NULL pointer dereference and application crash) against directory authorities via a malformed descriptor, aka TROVE-2017-010.",
  "id": "GHSA-rcr7-p7pf-h84m",
  "modified": "2022-05-17T00:12:00Z",
  "published": "2022-05-17T00:12:00Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-8820"
    },
    {
      "type": "WEB",
      "url": "https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516"
    },
    {
      "type": "WEB",
      "url": "https://bugs.torproject.org/24245"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2017/dsa-4054"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GSD-2017-8820

Vulnerability from gsd - Updated: 2023-12-13 01:21

Details

Aliases

CVE-2017-8820

Aliases

CVE-2017-8820

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2017-8820",
    "description": "In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, remote attackers can cause a denial of service (NULL pointer dereference and application crash) against directory authorities via a malformed descriptor, aka TROVE-2017-010.",
    "id": "GSD-2017-8820",
    "references": [
      "https://www.suse.com/security/cve/CVE-2017-8820.html",
      "https://www.debian.org/security/2017/dsa-4054",
      "https://advisories.mageia.org/CVE-2017-8820.html",
      "https://security.archlinux.org/CVE-2017-8820"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2017-8820"
      ],
      "details": "In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, remote attackers can cause a denial of service (NULL pointer dereference and application crash) against directory authorities via a malformed descriptor, aka TROVE-2017-010.",
      "id": "GSD-2017-8820",
      "modified": "2023-12-13T01:21:08.994620Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security@debian.org",
        "ID": "CVE-2017-8820",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9"
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "n/a"
            }
          ]
        }
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, remote attackers can cause a denial of service (NULL pointer dereference and application crash) against directory authorities via a malformed descriptor, aka TROVE-2017-010."
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "denial of service"
              }
            ]
          }
        ]
      },
      "references": {
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            "name": "https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516",
            "refsource": "CONFIRM",
            "url": "https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516"
          },
          {
            "name": "DSA-4054",
            "refsource": "DEBIAN",
            "url": "https://www.debian.org/security/2017/dsa-4054"
          },
          {
            "name": "https://bugs.torproject.org/24245",
            "refsource": "CONFIRM",
            "url": "https://bugs.torproject.org/24245"
          }
        ]
      }
    },
    "nvd.nist.gov": {
      "configurations": {
        "CVE_data_version": "4.0",
        "nodes": [
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:a:tor_project:tor:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "0.2.5.16",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:tor_project:tor:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "0.3.0.13",
                "versionStartIncluding": "0.3.0",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:tor_project:tor:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "0.2.8.17",
                "versionStartIncluding": "0.2.6",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:tor_project:tor:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "0.3.1.9",
                "versionStartIncluding": "0.3.1",
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:a:tor_project:tor:*:*:*:*:*:*:*:*",
                "cpe_name": [],
                "versionEndExcluding": "0.2.9.14",
                "versionStartIncluding": "0.2.9",
                "vulnerable": true
              }
            ],
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          },
          {
            "children": [],
            "cpe_match": [
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              },
              {
                "cpe23Uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
                "cpe_name": [],
                "vulnerable": true
              }
            ],
            "operator": "OR"
          }
        ]
      },
      "cve": {
        "CVE_data_meta": {
          "ASSIGNER": "security@debian.org",
          "ID": "CVE-2017-8820"
        },
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        "data_type": "CVE",
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        "description": {
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            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "en",
                  "value": "CWE-476"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://bugs.torproject.org/24245",
              "refsource": "CONFIRM",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://bugs.torproject.org/24245"
            },
            {
              "name": "https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516",
              "refsource": "CONFIRM",
              "tags": [
                "Vendor Advisory"
              ],
              "url": "https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516"
            },
            {
              "name": "DSA-4054",
              "refsource": "DEBIAN",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.debian.org/security/2017/dsa-4054"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 3.6
        }
      },
      "lastModifiedDate": "2017-12-21T18:07Z",
      "publishedDate": "2017-12-03T07:29Z"
    }
  }
}

OPENSUSE-SU-2017:3201-1

Vulnerability from csaf_opensuse - Published: 2017-12-02 14:54 - Updated: 2017-12-02 14:54

Summary

Security update for tor

Severity

Moderate

Scope

5 vulnerabilities in this advisory, including CVE-2017-8820.

CVE-2017-8820

7.5 (High)


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

Recommended: 4 products

Open the full advisory

OPENSUSE-SU-2017:3203-1

Vulnerability from csaf_opensuse - Published: 2017-12-02 14:54 - Updated: 2017-12-02 14:54

Summary

Security update for tor

Severity

Moderate

Scope

5 vulnerabilities in this advisory, including CVE-2017-8820.

CVE-2017-8820

7.5 (High)


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

Recommended: 4 products

Open the full advisory

OPENSUSE-SU-2024:11469-1

Vulnerability from csaf_opensuse - Published: 2024-06-15 00:00 - Updated: 2024-06-15 00:00

Summary

tor-0.4.6.7-2.2 on GA media

Severity

Moderate

Scope

22 vulnerabilities in this advisory, including CVE-2017-8820.

CVE-2017-8820

7.5 (High)


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

Recommended: 4 products

Open the full advisory

ubuntu-cve-2017-8820

Vulnerability from osv_ubuntu

Published

2017-12-03 07:29

Modified

2025-09-08 16:44

Summary

Details

Severity

7.5 (High)


                    
                      CVSS:3.0/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-2017-8820	REPORT
	https://bugs.torproject.org/24245	REPORT
	https://blog.torproject.org/new-stable-tor-releas…	REPORT
	https://www.cve.org/CVERecord?id=CVE-2017-8820	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "tor",
            "binary_version": "0.2.9.14-1ubuntu1~16.04.2"
          },
          {
            "binary_name": "tor-geoipdb",
            "binary_version": "0.2.9.14-1ubuntu1~16.04.2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "tor",
        "purl": "pkg:deb/ubuntu/tor@0.2.9.14-1ubuntu1~16.04.2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.2.9.14-1ubuntu1~16.04.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.2.6.10-1ubuntu2",
        "0.2.7.6-1ubuntu1",
        "0.2.9.11-1ubuntu1~16.04.1",
        "0.2.9.14-1ubuntu1~16.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "In Tor before 0.2.5.16, 0.2.6 through 0.2.8 before 0.2.8.17, 0.2.9 before 0.2.9.14, 0.3.0 before 0.3.0.13, and 0.3.1 before 0.3.1.9, remote attackers can cause a denial of service (NULL pointer dereference and application crash) against directory authorities via a malformed descriptor, aka TROVE-2017-010.",
  "id": "UBUNTU-CVE-2017-8820",
  "modified": "2025-09-08T16:44:15Z",
  "published": "2017-12-03T07:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-8820"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.torproject.org/24245"
    },
    {
      "type": "REPORT",
      "url": "https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2017-8820"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/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-2017-8820"
  ]
}

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.

Action not permitted

CVE-2017-8820 (GCVE-0-2017-8820)

Vulnerability from osv_ubuntu

Tags

Sightings

Nomenclature

Related by attack behaviour