Vulnerability Details : CVE-2013-6999
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.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2013-6999
- cpe:2.3:o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2013-6999
0.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 8 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2013-6999
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.0
|
MEDIUM | AV:L/AC:H/Au:N/C:N/I:N/A:C |
1.9
|
6.9
|
NIST |
References for CVE-2013-6999
-
http://secunia.com/advisories/55633
Sign inVendor Advisory
-
http://www.securityfocus.com/bid/64057
Microsoft Windows Kernel 'IsHandleEntrySecure()' Function Local Denial of Service Vulnerability
-
http://pastebin.com/raw.php?i=we0ZSQC0
Exploit
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