Advisory Details

March 21st, 2017

Microsoft Windows DrawIconEx Buffer Overflow Privilege Escalation Vulnerability

ZDI-17-168
ZDI-CAN-4052

CVE ID CVE-2017-0047
CVSS SCORE 6.9, (AV:L/AC:M/Au:N/C:C/I:C/A:C)
AFFECTED VENDORS Microsoft
AFFECTED PRODUCTS Windows
VULNERABILITY DETAILS


This vulnerability allows local attackers to escalate privileges on vulnerable installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.

The specific flaw exists within the code in the Windows kernel that renders icons. By supplying certain parameter values in a call to DrawIconEx, an attacker can trigger an overflow of a buffer. An attacker can leverage this vulnerability to escalate privilege to SYSTEM.

ADDITIONAL DETAILS Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://technet.microsoft.com/en-us/library/security/MS17-0113
DISCLOSURE TIMELINE
  • 2016-10-06 - Vulnerability reported to vendor
  • 2017-03-21 - Coordinated public release of advisory
CREDIT bear13oy of CloverSec Labs
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