(Pwn2Own) Microsoft Windows D3DKMTCreateDCFromMemory Memory Corruption Privilege Escalation Vulnerability
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 creation of a device context from memory using the D3DKMTCreateDCFromMemory API. When processing the width parameter, the process does not properly validate user-supplied data, which can result in a memory corruption condition. An attacker can leverage this vulnerability to escalate privileges to SYSTEM.
Additional Details
Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8164
Disclosure Timeline
- 2018-03-18 - Vulnerability reported to vendor
- 2018-06-08 - Coordinated public release of advisory
- 2018-06-08 - Advisory Updated
Credit
Richard Zhu (fluorescence)
