pysec - pysec-2024-10

PYSEC-2024-10

Vulnerability from pysec - Published: 2024-01-12 03:15 - Updated: 2024-01-22 18:22

Details

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.

Severity ?

9.8 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impacted products

Name	purl
portage	pkg:pypi/portage

Aliases

CVE-2016-20021

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "PyPI",
        "name": "portage",
        "purl": "pkg:pypi/portage"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.0.47"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.0.18",
        "3.0.19",
        "3.0.20",
        "3.0.21",
        "3.0.22",
        "3.0.23",
        "3.0.24",
        "3.0.25",
        "3.0.26",
        "3.0.27",
        "3.0.28",
        "3.0.29",
        "3.0.30",
        "3.0.31",
        "3.0.32",
        "3.0.33",
        "3.0.34",
        "3.0.35",
        "3.0.36",
        "3.0.37",
        "3.0.38",
        "3.0.38.1",
        "3.0.39",
        "3.0.40",
        "3.0.41",
        "3.0.42",
        "3.0.43",
        "3.0.44",
        "3.0.45",
        "3.0.45.1",
        "3.0.45.2",
        "3.0.45.3",
        "3.0.46"
      ]
    }
  ],
  "aliases": [
    "CVE-2016-20021"
  ],
  "details": "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.",
  "id": "PYSEC-2024-10",
  "modified": "2024-01-22T18:22:47.599296+00:00",
  "published": "2024-01-12T03:15:00+00:00",
  "references": [
    {
      "type": "WEB",
      "url": "https://wiki.gentoo.org/wiki/Portage"
    },
    {
      "type": "WEB",
      "url": "https://gitweb.gentoo.org/proj/portage.git/tree/NEWS"
    },
    {
      "type": "REPORT",
      "url": "https://bugs.gentoo.org/597800"
    },
    {
      "type": "FIX",
      "url": "https://bugs.gentoo.org/597800"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2016-20021 (GCVE-0-2016-20021)

Vulnerability from cvelistv5 – Published: 2024-01-12 00:00 – Updated: 2025-06-03 14:07

Summary

Severity ?

9.8 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

Assigner

mitre

References

URL

Tags

	https://wiki.gentoo.org/wiki/Portage
	https://gitweb.gentoo.org/proj/portage.git/tree/NEWS
	https://bugs.gentoo.org/597800

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T03:47:34.866Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://wiki.gentoo.org/wiki/Portage"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://gitweb.gentoo.org/proj/portage.git/tree/NEWS"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://bugs.gentoo.org/597800"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "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"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2016-20021",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-05-09T23:34:49.198008Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-347",
                "description": "CWE-347 Improper Verification of Cryptographic Signature",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-06-03T14:07:01.657Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-01-17T19:54:57.378Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://wiki.gentoo.org/wiki/Portage"
        },
        {
          "url": "https://gitweb.gentoo.org/proj/portage.git/tree/NEWS"
        },
        {
          "url": "https://bugs.gentoo.org/597800"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2016-20021",
    "datePublished": "2024-01-12T00:00:00.000Z",
    "dateReserved": "2024-01-12T00:00:00.000Z",
    "dateUpdated": "2025-06-03T14:07:01.657Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

PYSEC-2024-10

CVE-2016-20021 (GCVE-0-2016-20021)

Tags

Sightings

Nomenclature