Advisory Details

August 13th, 2013

(Pwn2Own) Microsoft Windows Shared Data ASLR Security Feature Bypass Vulnerability

CVE ID	CVE-2013-2556
CVSS SCORE	5.0, AV:N/AC:L/Au:N/C:P/I:N/A:N
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Windows 7
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Microsoft Windows. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the existence of KUSER_SHARED_DATA. The issue lies in the ability to predict the address of the structure, which can then be used to leak addresses. An attacker can leverage this to bypass ASLR and DEP on the host.
ADDITIONAL DETAILS	Microsoft has issued an update to correct this vulnerability. More details can be found at: https://technet.microsoft.com/en-us/security/bulletin/ms13-063
DISCLOSURE TIMELINE	2013-04-26 - Vulnerability reported to vendor 2013-08-13 - Coordinated public release of advisory
CREDIT	VUPEN Security [ http://www.vupen.com ]

BACK TO ADVISORIES