Microsoft Windows DirectComposition Uninitialized Pointer Privilege Escalation Vulnerability
Vulnerability Details
This vulnerability allows local attackers to escalate privileges on affected 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 implementation of DirectComposition in the Windows kernel. Crafted parameters to a system call can trigger access to a pointer prior to initialization. An attacker can leverage this vulnerability to escalate privileges and execute code in the context of the kernel.
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-2020-17057
Disclosure Timeline
- 2020-09-18 - Vulnerability reported to vendor
- 2020-11-11 - Coordinated public release of advisory
Credit
Anonymous
