CVE-2017-8684

MEDIUM

Windows GDI+ Kernel Memory Address Disclosure in Windows 7 SP1, 8.1, Server 2008 SP2/R2 SP1, Server 2012/2012 R2, RT 8.1

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2017-8684. PoCs published by Google Security Research.

AI-analyzed exploit summary This exploit demonstrates an information leak vulnerability in Windows GDI (CVE-2017-8684) where uninitialized kernel stack memory is disclosed to user-mode via the `NtGdiGetFontResourceInfoInternalW` system call. The PoC triggers the leak by calling `GetFontResourceInfoW` with a small output buffer, revealing kernel stack contents.

Description

Windows GDI+ on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT 8.1, allows information disclosure by the way it discloses kernel memory addresses, aka "Windows GDI+ Information Disclosure Vulnerability". This CVE ID is unique from CVE-2017-8685 and CVE-2017-8688.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Google Security Research · c++doswindows
https://www.exploit-db.com/exploits/42747

This exploit demonstrates an information leak vulnerability in Windows GDI (CVE-2017-8684) where uninitialized kernel stack memory is disclosed to user-mode via the `NtGdiGetFontResourceInfoInternalW` system call. The PoC triggers the leak by calling `GetFontResourceInfoW` with a small output buffer, revealing kernel stack contents.

Classification
Working Poc 100%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Microsoft Windows (pre-Windows 10)
Auth required
Prerequisites: Local access to a vulnerable Windows system · Presence of a font file (e.g., arial.ttf)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/100782
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id/1039338
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/42747/

Scores

CVSS v3 5.5
EPSS 0.0427
EPSS Percentile 89.8%
Attack Vector LOCAL
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-200
Status published
Products (8)
microsoft/windows_7
microsoft/windows_8.1
microsoft/windows_rt_8.1
microsoft/windows_server_2008
microsoft/windows_server_2008 r2 sp1 (2 CPE variants)
microsoft/windows_server_2012
microsoft/windows_server_2012 r2
Microsoft Corporation/Windows GDI+ Windows GDI+ on Microsoft Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8.1, Windows Se
Published Sep 13, 2017
Tracked Since Feb 18, 2026