FKIE_CVE-2021-44540

Vulnerability from fkie_nvd - Published: 2021-12-23 20:15 - Updated: 2026-06-17 04:12
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A vulnerability was found in Privoxy which was fixed in get_url_spec_param() by freeing memory of compiled pattern spec before bailing.
References
secalert@redhat.comhttps://www.privoxy.org/3.0.33/user-manual/whatsnew.html%2C
secalert@redhat.comhttps://www.privoxy.org/gitweb/?p=privoxy.git%3Ba=commit%3Bh=652b4b7cb0
af854a3a-2127-422b-91ae-364da2661108https://www.privoxy.org/3.0.33/user-manual/whatsnew.html%2C
af854a3a-2127-422b-91ae-364da2661108https://www.privoxy.org/gitweb/?p=privoxy.git%3Ba=commit%3Bh=652b4b7cb0
Impacted products
Vendor Product Version
privoxy privoxy *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Privoxy",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Privoxy 3.0.33"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:privoxy:privoxy:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "068EEA45-2037-4304-9959-A789314617F7",
              "versionEndExcluding": "3.0.33",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was found in Privoxy which was fixed in get_url_spec_param() by freeing memory of compiled pattern spec before bailing."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado una vulnerabilidad en Privoxy que ha sido corregida en la funci\u00f3n get_url_spec_param(), al liberar la memoria de la especificaci\u00f3n del patr\u00f3n compilado antes de abandonar"
    }
  ],
  "id": "CVE-2021-44540",
  "lastModified": "2026-06-17T04:12:32.440",
  "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": "2021-12-23T20:15:11.940",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://www.privoxy.org/3.0.33/user-manual/whatsnew.html%2C"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://www.privoxy.org/gitweb/?p=privoxy.git%3Ba=commit%3Bh=652b4b7cb0"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.privoxy.org/3.0.33/user-manual/whatsnew.html%2C"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.privoxy.org/gitweb/?p=privoxy.git%3Ba=commit%3Bh=652b4b7cb0"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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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.