{
  "id": "CVE-2021-3978",
  "sourceIdentifier": "cna@cloudflare.com",
  "published": "2025-01-29T10:15:07.750",
  "lastModified": "2025-01-29T10:15:07.750",
  "vulnStatus": "Awaiting Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "When copying files with rsync, octorpki uses the \"-a\" flag 0, which forces rsync to copy binaries with the suid bit set as root. Since the provided service definition defaults to root ( https://github.com/cloudflare/cfrpki/blob/master/package/octorpki.service ) this could allow for a vector, when combined with another vulnerability that causes octorpki to process a malicious TAL file, for a local privilege escalation."
    },
    {
      "lang": "es",
      "value": "Al copiar archivos con rsync, octorpki utiliza el indicador \"-a\" 0, que obliga a rsync a copiar binarios con el bit suid establecido como root. Dado que la definici\u00f3n de servicio proporcionada tiene como valor predeterminado root (https://github.com/cloudflare/cfrpki/blob/master/package/octorpki.service), esto podr\u00eda permitir un vector, cuando se combina con otra vulnerabilidad que hace que octorpki procese un archivo TAL malicioso, para una escalada de privilegios local."
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "cna@cloudflare.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "attackVector": "LOCAL",
          "attackComplexity": "HIGH",
          "privilegesRequired": "LOW",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 0.8,
        "impactScore": 6.0
      }
    ]
  },
  "weaknesses": [
    {
      "source": "cna@cloudflare.com",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/cloudflare/cfrpki/security/advisories/GHSA-3pqh-p72c-fj85",
      "source": "cna@cloudflare.com"
    }
  ]
}