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CVE-2020-26880

Estado: ModificadaAlta (7.8)—

Sympa versiones hasta 6.2.57b.2, permite una escalada de privilegios local desde la cuenta de usuario sympa hacia el acceso root completo mediante la modificación del archivo de configuración sympa.conf (que es propiedad de sympa) y analizándolo por medio del ejecutable sympa_newaliases-wrapper de setuid

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 (3)

Debian — Debian LinuxFedoraproject — FedoraSympa — Sympa

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-26880",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 7.2,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "authentication": "NONE",
          "integrityImpact": "COMPLETE",
          "accessComplexity": "LOW",
          "availabilityImpact": "COMPLETE",
          "confidentialityImpact": "COMPLETE"
        },
        "acInsufInfo": false,
        "impactScore": 10,
        "baseSeverity": "HIGH",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "cve@mitre.org",
      "affectedData": [
        {
          "vendor": "n/a",
          "product": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-10-07T18:15:12.133",
  "references": [
    {
      "url": "https://github.com/sympa-community/sympa/issues/1009",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/sympa-community/sympa/issues/943#issuecomment-704779420",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
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      "tags": [
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00015.html",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5CUVLHGWCDA6B2NH467ZMKL6O2NGLQZN/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B5MFWWYY4TSQAXBWZ6SBFX43BLUL3WWI/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E2TKOL454ZKKLQCUSUPNEZ52WELN4OAH/",
      "source": "cve@mitre.org"
    },
    {
      "url": "https://github.com/sympa-community/sympa/issues/1009",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/sympa-community/sympa/issues/943#issuecomment-704779420",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://github.com/sympa-community/sympa/issues/943#issuecomment-704842235",
      "tags": [
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2020/11/msg00015.html",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5CUVLHGWCDA6B2NH467ZMKL6O2NGLQZN/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B5MFWWYY4TSQAXBWZ6SBFX43BLUL3WWI/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E2TKOL454ZKKLQCUSUPNEZ52WELN4OAH/",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Sympa through 6.2.57b.2 allows a local privilege escalation from the sympa user account to full root access by modifying the sympa.conf configuration file (which is owned by sympa) and parsing it through the setuid sympa_newaliases-wrapper executable."
    },
    {
      "lang": "es",
      "value": "Sympa versiones hasta 6.2.57b.2, permite una escalada de privilegios local desde la cuenta de usuario sympa hacia el acceso root completo mediante la modificación del archivo de configuración sympa.conf (que es propiedad de sympa) y analizándolo por medio del ejecutable sympa_newaliases-wrapper de setuid"
    }
  ],
  "lastModified": "2026-06-17T03:08:27.500",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:sympa:sympa:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "371839E1-FA43-4288-9396-414A8D4E3A8B",
              "versionEndIncluding": "6.2.56"
            },
            {
              "criteria": "cpe:2.3:a:sympa:sympa:6.2.57:beta1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "2038196F-EF30-49EF-8D4D-CFB0F3F6D931"
            },
            {
              "criteria": "cpe:2.3:a:sympa:sympa:6.2.57:beta2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A1737DC9-FCAF-4EB6-8480-6C99AE992A3D"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "36D96259-24BD-44E2-96D9-78CE1D41F956"
            },
            {
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              "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194"
            },
            {
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              "vulnerable": true,
              "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835"
            }
          ],
          "operator": "OR"
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      ]
    },
    {
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          "cpeMatch": [
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              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252"
            }
          ],
          "operator": "OR"
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    }
  ],
  "sourceIdentifier": "cve@mitre.org"
}