vendor:
N/A
by:
Project Zero
7,8
CVSS
HIGH
Buffer Overflow
119
CWE
Product Name: N/A
Affected Version From: N/A
Affected Version To: N/A
Patch Exists: YES
Related CWE: N/A
CPE: N/A
Metasploit:
N/A
Other Scripts:
N/A
Tags: N/A
CVSS Metrics: N/A
Nuclei References:
N/A
Nuclei Metadata: N/A
Platforms Tested: Windows
2017
DxgkDdiEscape handler for escape 0x100009a lacks proper bounds checks
The DxgkDdiEscape handler for escape 0x100009a lacks proper bounds checks, leading to a buffer overflow on the allocated pool buffer. There is a check that total_size > 0x10, which calls some kind of a debug/logging function (do_debug_thingo in my pseudocode), but it does not actually stop processing of the escape. There is also a potential integer overflow in the calculation of |total_size|.
Mitigation:
Ensure that proper bounds checks are in place for the DxgkDdiEscape handler for escape 0x100009a.
