FKIE_CVE-2025-5689

Vulnerability from fkie_nvd - Published: 2025-06-16 12:15 - Updated: 2026-06-17 09:48
Severity
8.5 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N
Summary
A flaw was found in the temporary user record that authd uses in the pre-auth NSS. As a result, a user login for the first time will be considered to be part of the root group in the context of that SSH session.
References
security@ubuntu.comhttps://github.com/ubuntu/authd/security/advisories/GHSA-g8qw-mgjx-rwjrPatch, Vendor Advisory
Impacted products
Vendor Product Version
canonical authd *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "packageName": "authd",
          "platforms": [
            "Linux"
          ],
          "product": "authd",
          "vendor": "Canonical",
          "versions": [
            {
              "lessThanOrEqual": "0.5.4",
              "status": "affected",
              "version": "0.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@ubuntu.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:canonical:authd:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "E78F2FC7-C0B5-442C-B297-A13D953FAE25",
              "versionEndExcluding": "0.5.4",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in the temporary user record that authd uses in the pre-auth NSS. As a result, a user login for the first time will be considered to be part of the root group in the context of that SSH session."
    },
    {
      "lang": "es",
      "value": "Se detect\u00f3 una falla en el registro de usuario temporal que authd utiliza en el NSS previo a la autorizaci\u00f3n. Como resultado, un usuario que inicia sesi\u00f3n por primera vez se considerar\u00e1 parte del grupo root en el contexto de esa sesi\u00f3n SSH."
    }
  ],
  "id": "CVE-2025-5689",
  "lastModified": "2026-06-17T09:48:33.597",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 8.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.1,
        "impactScore": 4.7,
        "source": "security@ubuntu.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-5689",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-06-16T14:30:20.756660Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-06-16T12:15:19.610",
  "references": [
    {
      "source": "security@ubuntu.com",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://github.com/ubuntu/authd/security/advisories/GHSA-g8qw-mgjx-rwjr"
    }
  ],
  "sourceIdentifier": "security@ubuntu.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "type": "Secondary"
    }
  ]
}



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