Microsoft Windows bindflt Driver Missing Authentication 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 bindflt.sys driver. A crafted request with an IOCTL of 0x220000 can perform remapping of directories. An attacker can leverage this vulnerability to escalate privileges and execute code in the context 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-2020-17012
Disclosure Timeline
- 2020-08-05 - Vulnerability reported to vendor
- 2020-11-11 - Coordinated public release of advisory
Credit
whoami
