fkie_cve-2021-34549
Vulnerability from fkie_nvd
Published
2021-06-29 12:15
Modified
2024-11-21 06:10
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-005. Hashing is mishandled for certain retrieval of circuit data. Consequently. an attacker can trigger the use of an attacker-chosen circuit ID to cause algorithm inefficiency.
References
cve@mitre.orghttps://blog.torproject.org/node/2041Release Notes, Vendor Advisory
cve@mitre.orghttps://gitlab.torproject.org/tpo/core/tor/-/issues/40391Broken Link
cve@mitre.orghttps://security.gentoo.org/glsa/202107-25Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://blog.torproject.org/node/2041Release Notes, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://gitlab.torproject.org/tpo/core/tor/-/issues/40391Broken Link
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202107-25Third Party Advisory
Impacted products
Vendor Product Version
torproject tor *
torproject tor *
torproject tor *
torproject tor *


To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "C2666B22-DC07-4BFA-A756-3DC4E970EBDD",
              "versionEndExcluding": "0.3.5.15",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "072B35B0-7EBF-4652-BB89-12B4BEC9A8EF",
              "versionEndExcluding": "0.4.4.9",
              "versionStartIncluding": "0.4.0.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "57ED9234-622B-4B0D-8E29-2851A87DE0D1",
              "versionEndExcluding": "0.4.5.9",
              "versionStartIncluding": "0.4.5.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:torproject:tor:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "EFD89230-DBEF-4134-9C42-8187CE542B7C",
              "versionEndExcluding": "0.4.6.5",
              "versionStartIncluding": "0.4.6.0",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in Tor before 0.4.6.5, aka TROVE-2021-005. Hashing is mishandled for certain retrieval of circuit data. Consequently. an attacker can trigger the use of an attacker-chosen circuit ID to cause algorithm inefficiency."
    },
    {
      "lang": "es",
      "value": "Se ha detectado un problema en Tor versiones anteriores a 0.4.6.5, tambi\u00e9n se conoce como TROVE-2021-005. Un hashing es manejado inapropiadamente para determinadas recuperaciones de datos del circuito. Consecuentemente, un atacante puede desencadenar un ID de circuito elegido por el atacante para causar ineficiencia en el algoritmo"
    }
  ],
  "id": "CVE-2021-34549",
  "lastModified": "2024-11-21T06:10:39.140",
  "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": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-06-29T12:15:08.643",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://blog.torproject.org/node/2041"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Broken Link"
      ],
      "url": "https://gitlab.torproject.org/tpo/core/tor/-/issues/40391"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.gentoo.org/glsa/202107-25"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "url": "https://blog.torproject.org/node/2041"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Broken Link"
      ],
      "url": "https://gitlab.torproject.org/tpo/core/tor/-/issues/40391"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.gentoo.org/glsa/202107-25"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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