CVE-2019-1015 in Windows
Summary
by MITRE
An information disclosure vulnerability exists when the Windows GDI component improperly discloses the contents of its memory, aka 'Windows GDI Information Disclosure Vulnerability'. This CVE ID is unique from CVE-2019-0968, CVE-2019-0977, CVE-2019-1009, CVE-2019-1010, CVE-2019-1011, CVE-2019-1012, CVE-2019-1013, CVE-2019-1016, CVE-2019-1046, CVE-2019-1047, CVE-2019-1048, CVE-2019-1049, CVE-2019-1050.
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Analysis
by VulDB Data Team • 05/20/2025
The Windows GDI (Graphics Device Interface) component serves as a critical interface for rendering graphics and managing visual elements within the Windows operating system. This vulnerability specifically affects how GDI handles memory management when processing certain graphics operations, creating an information disclosure flaw that allows unauthorized access to sensitive memory contents. The vulnerability exists in the way GDI processes specific graphic objects and buffer operations, potentially exposing kernel memory addresses, system data, or other confidential information stored in memory regions that should remain protected from user-mode applications.
The technical flaw manifests when GDI processes certain graphic operations that involve improper memory bounds checking or inadequate validation of input parameters. This allows malicious applications or attackers to craft specific graphic operations that trigger memory disclosure behaviors, potentially revealing kernel memory contents including stack pointers, heap addresses, or other sensitive data structures. The vulnerability is particularly concerning because it operates at the graphics rendering layer where applications may have elevated privileges or where memory corruption could lead to further exploitation vectors. The issue stems from insufficient input validation within GDI's memory handling routines, creating a pathway for information leakage that violates fundamental security principles of memory isolation.
The operational impact of this vulnerability extends beyond simple information disclosure, as the leaked memory contents could contain critical system information that aids in more sophisticated attacks. Attackers could potentially use the disclosed memory addresses to bypass security mechanisms like address space layout randomization, or to craft more effective exploitation techniques against other vulnerabilities present in the system. The vulnerability affects Windows systems where GDI is actively used for graphic rendering operations, making it particularly relevant for desktop environments, applications with rich graphical interfaces, and systems where graphic-intensive operations are common. This information disclosure could enable attackers to perform advanced persistent threat operations, escalate privileges, or conduct targeted attacks against specific system components.
Mitigation strategies should focus on implementing proper input validation and memory bounds checking within the GDI component, along with applying Microsoft security updates that address the specific memory handling flaws. System administrators should ensure that all Windows systems receive timely security patches, particularly those related to graphics rendering components. Additional defensive measures include implementing application whitelisting to restrict graphic-intensive applications, monitoring for unusual graphic processing patterns, and maintaining up-to-date intrusion detection systems that can identify potential exploitation attempts. Organizations should also consider implementing memory protection mechanisms and ensuring that graphic rendering operations are properly sandboxed to limit potential damage from information disclosure events. This vulnerability aligns with CWE-200 (Information Exposure) and may contribute to techniques described in the ATT&CK framework under credential access and defense evasion tactics, emphasizing the need for comprehensive security controls that address both the immediate information disclosure threat and potential follow-on exploitation opportunities.