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CVE-2021-45707

Estado: ModificadaCrítica (9.8)—
Gravedad9.8Crítica · CVSS 3.1
Probabilidad de explotación1.69 %mayor que el 77 % de las CVE
Explotación activaNono figura en el catálogo de CISA
Exploit públicoNo conocidosin código público localizado

Se ha descubierto un problema en las cajas nix versión 0.16.0 y posteriores antes de la versión 0.20.2, 0.21.x antes de la versión 0.21.2 y 0.22.x antes de la versión 0.22.2 para Rust. unistd::getgrouplist tiene una escritura fuera de límites si un usuario está en más de 16 grupos /etc/groups.

CVSS

Puntuación base
9.8
Versión
3.1
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días
1.69 %
Percentil entre todas las CVEs puntuadas
77
Fecha de la puntuación
23/10/2026

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 (1)

NIX Project — NIX

CWE

Referencias

Mostrar las 6 referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-45707",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 9.8,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2021-12-27T00:15:09.940",
  "references": [
    {
      "url": "https://github.com/advisories/GHSA-wgrg-5h56-jg27",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/nix/RUSTSEC-2021-0119.md",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0119.html",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/advisories/GHSA-wgrg-5h56-jg27",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://raw.githubusercontent.com/rustsec/advisory-db/main/crates/nix/RUSTSEC-2021-0119.md",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://rustsec.org/advisories/RUSTSEC-2021-0119.html",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "An issue was discovered in the nix crate 0.16.0 and later before 0.20.2, 0.21.x before 0.21.2, and 0.22.x before 0.22.2 for Rust. unistd::getgrouplist has an out-of-bounds write if a user is in more than 16 /etc/groups groups."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un problema en las cajas nix versión 0.16.0 y posteriores antes de la versión 0.20.2, 0.21.x antes de la versión 0.21.2 y 0.22.x antes de la versión 0.22.2 para Rust. unistd::getgrouplist tiene una escritura fuera de límites si un usuario está en más de 16 grupos /etc/groups."
    }
  ],
  "lastModified": "2026-06-17T04:13:59.380",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:nix_project:nix:*:*:*:*:*:rust:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CF1F6B59-1726-44F2-9977-2DD41F85778E",
              "versionEndExcluding": "0.20.2",
              "versionStartIncluding": "0.16.0"
            },
            {
              "criteria": "cpe:2.3:a:nix_project:nix:*:*:*:*:*:rust:*:*",
              "vulnerable": true,
              "matchCriteriaId": "BDBC1037-D26C-4EA0-AF66-09397A824AC3",
              "versionEndExcluding": "0.21.2",
              "versionStartIncluding": "0.21.0"
            },
            {
              "criteria": "cpe:2.3:a:nix_project:nix:*:*:*:*:*:rust:*:*",
              "vulnerable": true,
              "matchCriteriaId": "970096C2-F01C-4E38-A3C1-314A59F9E8B3",
              "versionEndExcluding": "0.22.2",
              "versionStartIncluding": "0.22.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}