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CVE-2002-0754

Status: ModifiedHigh (7.2)—

Kerberos 5 su (k5su) in FreeBSD 4.4 and earlier relies on the getlogin system call to determine if the user running k5su is root, which could allow a root-initiated process to regain its privileges after it has dropped them.

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (3)

Freebsd — FreebsdFreebsd — HeimdalKTH — Heimdal

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2002-0754",
  "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": true,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ]
  },
  "affected": [
    {
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      "affectedData": [
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          "product": "n/a",
          "versions": [
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              "status": "affected",
              "version": "n/a"
            }
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        }
      ]
    }
  ],
  "published": "2002-08-12T04:00:00.000",
  "references": [
    {
      "url": "ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-02:07.k5su.asc",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "cve@mitre.org"
    },
    {
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      "tags": [
        "Patch",
        "Vendor Advisory"
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      "source": "cve@mitre.org"
    },
    {
      "url": "http://www.securityfocus.com/bid/3919",
      "tags": [
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        "Vendor Advisory"
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      "source": "cve@mitre.org"
    },
    {
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      "tags": [
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      "tags": [
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Kerberos 5 su (k5su) in FreeBSD 4.4 and earlier relies on the getlogin system call to determine if the user running k5su is root, which could allow a root-initiated process to regain its privileges after it has dropped them."
    },
    {
      "lang": "es",
      "value": "Kerberos 5 su (k5su) en FreeBSD 4.4 y anteriores se basa en la llamada al sistema getlogin para determinar si el usuario que esta ejecutando k5su es root, lo cual podría permitir a procesos sin privilegios, la obtención de permisos si ese proceso tiene un getlogin como root."
    }
  ],
  "lastModified": "2026-06-16T21:58:04.283",
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}