FKIE_CVE-2013-6999

Vulnerability from fkie_nvd - Published: 2013-12-07 01:55 - Updated: 2026-06-17 00:01
Severity
Summary
The IsHandleEntrySecure function in win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2008 SP2 does not properly validate the tagPROCESSINFO pW32Job field, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted NtUserValidateHandleSecure call for an owned object. NOTE: the vendor reportedly disputes the significance of this report, stating that "it appears to be a local DOS ... we don't consider it a security vulnerability.
References
cve@mitre.orghttp://pastebin.com/raw.php?i=we0ZSQC0Exploit
cve@mitre.orghttp://secunia.com/advisories/55633Vendor Advisory
cve@mitre.orghttp://www.securityfocus.com/bid/64057
af854a3a-2127-422b-91ae-364da2661108http://pastebin.com/raw.php?i=we0ZSQC0Exploit
af854a3a-2127-422b-91ae-364da2661108http://secunia.com/advisories/55633Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/64057
Impacted products
Vendor Product Version
microsoft windows_server_2008 *
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
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      "source": "cve@mitre.org"
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  "cveTags": [
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      "value": "The IsHandleEntrySecure function in win32k.sys in the kernel-mode drivers in Microsoft Windows Server 2008 SP2 does not properly validate the tagPROCESSINFO pW32Job field, which allows local users to cause a denial of service (NULL pointer dereference and system crash) via a crafted NtUserValidateHandleSecure call for an owned object.  NOTE: the vendor reportedly disputes the significance of this report, stating that \"it appears to be a local DOS ... we don\u0027t consider it a security vulnerability."
    },
    {
      "lang": "es",
      "value": "EN DISPUTA ** ** La funci\u00f3n IsHandleEntrySecure en win32k.sys en los controladores en modo kernel de Microsoft Windows Server 2008 SP2 no valida correctamente el campo tagPROCESSINFO pW32Job, lo que permite a usuarios locales provocar una denegaci\u00f3n de servicio (referencia a un puntero NULL y ca\u00edda del sistema ) a trav\u00e9s de una llamada  NtUserValidateHandleSecure manipulada para un objeto de propiedad. NOTA: el vendedor informa: discute la importancia de este informe, afirmando que \" parece ser un local de DOS ... nosotros no consideramos que sea un problema de seguridad.\""
    }
  ],
  "evaluatorComment": "Per: http://cwe.mitre.org/data/definitions/476.html\n\n\"CWE-476: NULL Pointer Dereference\"",
  "id": "CVE-2013-6999",
  "lastModified": "2026-06-17T00:01:15.297",
  "metrics": {
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          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 4.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:L/AC:H/Au:N/C:N/I:N/A:C",
          "version": "2.0"
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        "impactScore": 6.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
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  "published": "2013-12-07T01:55:02.920",
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  "vulnStatus": "Modified",
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      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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