Zscaler, working with Microsoft through their MAPPs program has proactively deployed protections for the following vulnerability included in the September 2013 Microsoft security bulletins. Zscaler will continue to monitor exploits associated with all vulnerabilities in the September release and deploy additional protections as necessary
MSA-2887505 – Vulnerability in Internet Explorer Could Allow Remote Code Execution
Severity: Critical Affected Software
CVE-2013-3893 – Remote Code Execution Vulnerability in Internet Explorer Description: The vulnerability exists in the way that Internet Explorer accesses an object in memory that has been deleted or has not been properly allocated. The vulnerability may corrupt memory in a way that could allow an attacker to execute arbitrary code in the context of the current user within Internet Explorer. An attacker could host a specially crafted website that is designed to exploit this vulnerability through Internet Explorer and then convince a user to view the website.