« Volver al listado

CVE-2021-20271

Estado: ModificadaAlta (7)—

A flaw was found in RPM's signature check functionality when reading a package file. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package, whose signature header was modified, to cause RPM database corruption and execute code. The highest threat from this vulnerability is to data integrity, confidentiality, and system availability.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (4)

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-20271",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5.1,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "HIGH",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 4.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "rpm",
          "versions": [
            {
              "status": "affected",
              "version": "all versions"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-03-26T17:15:13.000",
  "references": [
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1934125",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K/",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHRPNBCRPDJHHQE3MBPSZK4H7X2IM7AC/",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YILPBTPSBRYL4POBI3F4YUSVPSOQNJBY/",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://security.gentoo.org/glsa/202107-43",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://www.starwindsoftware.com/security/sw-20220805-0002/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1934125",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/rpm-software-management/rpm/commit/d6a86b5e69e46cc283b1e06c92343319beb42e21",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMGXO3W6DHPO62GJ4VVF5DEUX5DRUR5K/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VHRPNBCRPDJHHQE3MBPSZK4H7X2IM7AC/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YILPBTPSBRYL4POBI3F4YUSVPSOQNJBY/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://security.gentoo.org/glsa/202107-43",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://www.starwindsoftware.com/security/sw-20220805-0002/",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-345"
        }
      ]
    },
    {
      "type": "Secondary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-345"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in RPM's signature check functionality when reading a package file. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package, whose signature header was modified, to cause RPM database corruption and execute code. The highest threat from this vulnerability is to data integrity, confidentiality, and system availability."
    },
    {
      "lang": "es",
      "value": "Se detectó un fallo en la funcionalidad de comprobación de firmas de RPM cuando se lee un archivo de paquete. Este fallo permite a un atacante que pueda convencer a una víctima de instalar un paquete aparentemente verificable, cuyo encabezado de firma fue modificado, causar una corrupción de la base de datos de RPM y ejecutar código. La mayor amenaza de esta vulnerabilidad es la integridad de los datos, la confidencialidad y la disponibilidad del sistema."
    }
  ],
  "lastModified": "2026-06-17T03:33:34.930",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "5017E785-D9A4-40BE-ADD8-4421BB138131",
              "versionEndExcluding": "4.15.1.3",
              "versionStartIncluding": "4.15.0"
            },
            {
              "criteria": "cpe:2.3:a:rpm:rpm:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F22989FC-E9C0-4189-BDFE-69346C3F8495",
              "versionEndExcluding": "4.16.1.3",
              "versionStartIncluding": "4.16.0"
            },
            {
              "criteria": "cpe:2.3:a:rpm:rpm:4.15.0:alpha:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6E77F834-98D9-45CA-A442-97362CEAB09C"
            },
            {
              "criteria": "cpe:2.3:a:rpm:rpm:4.15.0:beta1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "40503D12-35BC-4515-A293-F39A37B23A38"
            },
            {
              "criteria": "cpe:2.3:a:rpm:rpm:4.15.0:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "19299515-DF82-48A3-BA65-0DE705E75CA5"
            },
            {
              "criteria": "cpe:2.3:a:rpm:rpm:4.16.0:alpha:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "0565E985-6BD3-45E1-928C-B67E18B7B56E"
            },
            {
              "criteria": "cpe:2.3:a:rpm:rpm:4.16.0:beta2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "96BDFF27-D2ED-48F9-91FB-377D1244A0A0"
            },
            {
              "criteria": "cpe:2.3:a:rpm:rpm:4.16.0:beta3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "EA51C420-EFCB-4068-A981-E99722C5FAD7"
            },
            {
              "criteria": "cpe:2.3:a:rpm:rpm:4.16.0:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "653B69E5-0E47-49EF-AD3D-218C86252E7C"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "36D96259-24BD-44E2-96D9-78CE1D41F956"
            },
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194"
            },
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:starwindsoftware:starwind_virtual_san:v8:build14398:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2561CD5F-82A9-464E-B571-44634187B497"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}