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Research > Zero-Day Tracker > 20131127

Microsoft Windows Kernel Privilege Escalation

Date Disclosed:
11/27/2013

Date Patched:
1/14/2014

Vendor:
Microsoft

Affected Software:
Windows XP
Windows Server 2003

Description:
An elevation of privilege vulnerability exists in Windows, such that an attacker can execute a program as a normal user and escalate their privileges to kernel rights. This has been exploited in the wild.

Severity:
High

Code Execution:
Yes: in the kernel

Impact:

Local Elevation of Privilege
Local attackers exploiting this vulnerability will be able to elevate their privileges to the context of the kernel. Attackers will likely leverage this to hide their presence on the compromised system.

Mitigation:
Apply MS14-002. Otherwise, you may use the mitigation below:

To block attacks seen in the wild, reroute the NDProxy service to Null.sys.

Note that this will break functionality dependent on Windows Telephony Application Programming Interfaces. This includes Remote Access Service, dial-up networking, and virtual private networking.

Protection:
BeyondTrust's Retina® Network Security Scanner scans devices to detect for this vulnerability.

  • 32492 - Microsoft Windows Kernel Privilege Escalation (2914368)

Links:

Status:
2013-11-27: Original Disclosure

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