Advisory Details

August 10th, 2015

Microsoft Internet Explorer add-on Installer Sandbox Escape Vulnerability

CVE ID	CVE-2015-1743
CVSS SCORE	6.9, AV:L/AC:M/Au:N/C:C/I:C/A:C
AFFECTED VENDORS	Microsoft
AFFECTED PRODUCTS	Internet Explorer
VULNERABILITY DETAILS	This vulnerability allows remote attackers to escape Enhanced Protected Mode on vulnerable installations of Microsoft Internet Explorer. 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 usage of the add-on installer. An attacker can bypass checks within the add-on installer with special paths and junction points to achieve medium-integrity code execution under the context of the user.
ADDITIONAL DETAILS	Microsoft has issued an update to correct this vulnerability. More details can be found at: https://technet.microsoft.com/library/security/MS15-056
DISCLOSURE TIMELINE	2015-04-23 - Vulnerability reported to vendor 2015-08-10 - Coordinated public release of advisory
CREDIT	Thomas Vanhoutte

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