FKIE_CVE-2021-21289

Vulnerability from fkie_nvd - Published: 2021-02-02 19:15 - Updated: 2026-06-17 03:35
Severity
7.4 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
8.3 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Summary
Mechanize is an open-source ruby library that makes automated web interaction easy. In Mechanize from version 2.0.0 and before version 2.7.7 there is a command injection vulnerability. Affected versions of mechanize allow for OS commands to be injected using several classes' methods which implicitly use Ruby's Kernel.open method. Exploitation is possible only if untrusted input is used as a local filename and passed to any of these calls: Mechanize::CookieJar#load, Mechanize::CookieJar#save_as, Mechanize#download, Mechanize::Download#save, Mechanize::File#save, and Mechanize::FileResponse#read_body. This is fixed in version 2.7.7.
References
security-advisories@github.comhttps://github.com/sparklemotion/mechanize/commit/66a6a1bfa653a5f13274a396a5e5441238656aa0Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/sparklemotion/mechanize/releases/tag/v2.7.7Release Notes, Third Party Advisory
security-advisories@github.comhttps://github.com/sparklemotion/mechanize/security/advisories/GHSA-qrqm-fpv6-6r8gThird Party Advisory
security-advisories@github.comhttps://lists.debian.org/debian-lts-announce/2021/02/msg00021.htmlMailing List, Third Party Advisory
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LBVVJUL4P4KCJH4IQTHFZ4ATXY7XXZPV/
security-advisories@github.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YNFZ7ROYS6V4J5L5PRAJUG2AWC7VXR2V/
security-advisories@github.comhttps://rubygems.org/gems/mechanize/Product, Third Party Advisory
security-advisories@github.comhttps://security.gentoo.org/glsa/202107-17Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/sparklemotion/mechanize/commit/66a6a1bfa653a5f13274a396a5e5441238656aa0Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/sparklemotion/mechanize/releases/tag/v2.7.7Release Notes, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/sparklemotion/mechanize/security/advisories/GHSA-qrqm-fpv6-6r8gThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2021/02/msg00021.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LBVVJUL4P4KCJH4IQTHFZ4ATXY7XXZPV/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YNFZ7ROYS6V4J5L5PRAJUG2AWC7VXR2V/
af854a3a-2127-422b-91ae-364da2661108https://rubygems.org/gems/mechanize/Product, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202107-17Third Party Advisory
Impacted products
Vendor Product Version
mechanize_project mechanize *
fedoraproject fedora 32
fedoraproject fedora 33
debian debian_linux 9.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "mechanize",
          "vendor": "sparklemotion",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 2.0, \u003c 2.7.7"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Mechanize is an open-source ruby library that makes automated web interaction easy. In Mechanize from version 2.0.0 and before version 2.7.7 there is a command injection vulnerability. Affected versions of mechanize allow for OS commands to be injected using several classes\u0027 methods which implicitly use Ruby\u0027s Kernel.open method. Exploitation is possible only if untrusted input is used as a local filename and passed to any of these calls: Mechanize::CookieJar#load, Mechanize::CookieJar#save_as, Mechanize#download, Mechanize::Download#save, Mechanize::File#save, and Mechanize::FileResponse#read_body. This is fixed in version 2.7.7."
    },
    {
      "lang": "es",
      "value": "Mechanize es una biblioteca de ruby ??de c\u00f3digo abierto que facilita la interacci\u00f3n web automatizada.\u0026#xa0;En Mechanize desde versi\u00f3n 2.0.0 y versiones anteriores a 2.7.7, se presenta una vulnerabilidad de inyecci\u00f3n de comandos.\u0026#xa0;Las versiones afectadas de mechanize permiten a unos comandos del Sistema Operativo ser inyectados usando m\u00e9todos de varias clases que impl\u00edcitamente usan el m\u00e9todo Kernel.open de Ruby.\u0026#xa0;Una explotaci\u00f3n es posible solo si es usada una entrada que no sea confiable como nombre de archivo local y sea pasada a cualquiera de estas llamadas: Mechanize::CookieJar#load, Mechanize::CookieJar#save_as, Mechanize#download, Mechanize::Download#save, Mechanize::File#save y Mechanize::FileResponse#read_body.\u0026#xa0;Esto es corregido en versi\u00f3n 2.7.7"
    }
  ],
  "id": "CVE-2021-21289",
  "lastModified": "2026-06-17T03:35:12.263",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "HIGH",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.6,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:N/AC:H/Au:N/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 4.9,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
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    "cvssMetricV31": [
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          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N",
          "version": "3.1"
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          "confidentialityImpact": "HIGH",
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          "scope": "CHANGED",
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          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H",
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        "impactScore": 6.0,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  "published": "2021-02-02T19:15:14.220",
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    }
  ]
}



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