Microsoft Windows Submenu Use-After-Free 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 processing of hierarchical menus. The issue results from the lack of validating the existence of an object prior to performing operations on the object. An attacker can leverage this vulnerability to escalate privilege to the level of 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-2017-8689
Disclosure Timeline
- 2017-09-07 - Vulnerability reported to vendor
- 2017-10-10 - Coordinated public release of advisory
Credit
hungtt28 & nyancat of Viettel Cyber Security
