FKIE_CVE-2017-8821

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
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, an attacker can cause a denial of service (application hang) via crafted PEM input that signifies a public key requiring a password, which triggers an attempt by the OpenSSL library to ask the user for the password, aka TROVE-2017-011.
References
security@debian.orghttps://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516Vendor Advisory
security@debian.orghttps://bugs.torproject.org/24246Vendor Advisory
security@debian.orghttps://www.debian.org/security/2017/dsa-4054Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://blog.torproject.org/new-stable-tor-releases-security-fixes-0319-03013-02914-02817-02516Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugs.torproject.org/24246Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2017/dsa-4054Third 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
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, an attacker can cause a denial of service (application hang) via crafted PEM input that signifies a public key requiring a password, which triggers an attempt by the OpenSSL library to ask the user for the password, aka TROVE-2017-011."
    },
    {
      "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, un atacante puede provocar una denegaci\u00f3n de servicio (bloqueo de la aplicaci\u00f3n) mediante una entrada PEM manipulada que represente una clave p\u00fablica que requiera una contrase\u00f1a. Esto da lugar a que la biblioteca Open SSLE intente preguntar la contrase\u00f1a al usuario. Esto tambi\u00e9n se conoce como TROVE-2017-011."
    }
  ],
  "id": "CVE-2017-8821",
  "lastModified": "2026-06-17T01:27:01.367",
  "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": "2017-12-03T07:29:00.380",
  "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/24246"
    },
    {
      "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/24246"
    },
    {
      "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-119"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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