FKIE_CVE-2016-20021

Vulnerability from fkie_nvd - Published: 2024-01-12 03:15 - Updated: 2025-06-03 14:15
Severity ?
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In Gentoo Portage before 3.0.47, there is missing PGP validation of executed code: the standalone emerge-webrsync downloads a .gpgsig file but does not perform signature verification. Unless emerge-webrsync is used, Portage is not vulnerable.
References
cve@mitre.orghttps://bugs.gentoo.org/597800Issue Tracking, Patch
cve@mitre.orghttps://gitweb.gentoo.org/proj/portage.git/tree/NEWSRelease Notes
cve@mitre.orghttps://wiki.gentoo.org/wiki/PortageProduct
af854a3a-2127-422b-91ae-364da2661108https://bugs.gentoo.org/597800Issue Tracking, Patch
af854a3a-2127-422b-91ae-364da2661108https://gitweb.gentoo.org/proj/portage.git/tree/NEWSRelease Notes
af854a3a-2127-422b-91ae-364da2661108https://wiki.gentoo.org/wiki/PortageProduct
Impacted products
Vendor Product Version
gentoo portage *
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:gentoo:portage:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "81332CB9-672C-4676-8772-069B22C5C40F",
              "versionEndExcluding": "3.0.47",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In Gentoo Portage before 3.0.47, there is missing PGP validation of executed code: the standalone emerge-webrsync downloads a .gpgsig file but does not perform signature verification. Unless emerge-webrsync is used, Portage is not vulnerable."
    },
    {
      "lang": "es",
      "value": "En Gentoo Portage anterior a 3.0.47, falta la validaci\u00f3n PGP del c\u00f3digo ejecutado: el emerge-webrsync independiente descarga un archivo .gpgsig pero no realiza la verificaci\u00f3n de firma."
    }
  ],
  "id": "CVE-2016-20021",
  "lastModified": "2025-06-03T14:15:26.830",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2024-01-12T03:15:08.410",
  "references": [
    {
      "source": "cve@mitre.org",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://bugs.gentoo.org/597800"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Release Notes"
      ],
      "url": "https://gitweb.gentoo.org/proj/portage.git/tree/NEWS"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
        "Product"
      ],
      "url": "https://wiki.gentoo.org/wiki/Portage"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Patch"
      ],
      "url": "https://bugs.gentoo.org/597800"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Release Notes"
      ],
      "url": "https://gitweb.gentoo.org/proj/portage.git/tree/NEWS"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Product"
      ],
      "url": "https://wiki.gentoo.org/wiki/Portage"
    }
  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}


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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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