Vulnerability Name:

CVE-2013-6999

Assigned:2013-12-06
Published:2013-12-06
Updated:2013-12-20
Summary:** DISPUTED ** 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."
Per: http://cwe.mitre.org/data/definitions/476.html

"CWE-476: NULL Pointer Dereference"
CVSS v3 Severity:5.1 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.0 Medium (CVSS v2 Vector: AV:L/AC:H/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): High
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
4.0 Medium (CCN CVSS v2 Vector: AV:L/AC:H/Au:N/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-Other
References:Source: MITRE
Type: CNA
CVE-2013-6999

Source: MISC
Type: Exploit
http://pastebin.com/raw.php?i=we0ZSQC0

Source: SECUNIA
Type: Vendor Advisory
55633

Source: BID
Type: UNKNOWN
64057

Vulnerable Configuration:Configuration 1:
  • cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    microsoft windows server 2008 * sp2