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(Pwn2Own) Microsoft Windows AFD.SYS Dangling Pointer Privilege Escalation Vulnerability

Reference ID: SSA-1403
Publication date: 09.07.2014
Severity: critical
Discovered by: Sebastian Apelt

Affected products/versions: Microsoft Windows

Description from ZDI advisory: 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 handling of sockets. The issue lies in the failure to properly handle error conditions leading to a pointer not being reset. An attacker can leverage this vulnerability to raise privileges and execute code under the context of SYSTEM.

For a detailed write up about how we exploited this vulnerabiltiy please read our blog post

Microsoft Security Bulletin MS14-040