CVE-2019-11113 in Graphics Driver
Summary
by MITRE
Buffer overflow in Kernel Mode module for Intel(R) Graphics Driver before version 25.20.100.6618 (DCH) or 21.20.x.5077 (aka15.45.5077) may allow a privileged user to potentially enable information disclosure via local access.
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Analysis
by VulDB Data Team • 02/14/2024
This vulnerability represents a critical buffer overflow flaw within the kernel mode component of Intel's graphics driver software, specifically affecting versions prior to 25.20.100.6618 (DCH) and 21.20.x.5077. The issue resides in the graphics driver's kernel-mode module which handles low-level hardware operations and system interactions. When exploited, this vulnerability allows a privileged user to manipulate memory structures beyond their intended boundaries, potentially leading to information disclosure through local access. The flaw demonstrates characteristics consistent with CWE-121, which describes heap-based buffer overflow conditions where insufficient boundary checking permits access beyond allocated memory regions.
The technical exploitation of this buffer overflow occurs within the kernel mode context of the graphics driver, making it particularly dangerous as it operates with elevated privileges and direct hardware access capabilities. Attackers with local access can leverage this vulnerability to corrupt kernel memory structures, potentially extracting sensitive information from system memory or even escalating privileges further. The vulnerability's classification aligns with ATT&CK technique T1068 which covers 'Local Privilege Escalation' through kernel exploits, and T1005 which covers 'Data from Local System' extraction methods. The kernel mode execution context means that successful exploitation bypasses typical user-mode security controls and can compromise the entire system's integrity.
The operational impact of this vulnerability extends beyond simple information disclosure, as it represents a potential pathway for more sophisticated attacks. A malicious actor with local access could potentially use this flaw to extract kernel memory contents, including sensitive data such as encryption keys, credential information, or other confidential system data. The vulnerability affects systems running affected Intel graphics drivers, particularly those in enterprise environments where local access might be available through various attack vectors including compromised user accounts or insider threats. Systems utilizing Intel HD Graphics, Iris Graphics, or other Intel graphics hardware components are at risk when running vulnerable driver versions, making this a widespread concern for organizations maintaining legacy graphics driver installations.
Mitigation strategies should focus on immediate driver updates to versions 25.20.100.6618 or 21.20.x.5077 and later, which contain the necessary patches to address the buffer overflow condition. Organizations should implement comprehensive driver management policies to ensure all systems maintain current graphics driver versions, particularly in environments where local access privileges are not strictly controlled. Additional protective measures include monitoring for suspicious local activity, implementing least privilege access controls, and conducting regular vulnerability assessments of graphics driver components. The patching process should be prioritized as a critical security update, with particular attention to systems running older Intel graphics hardware that may not receive extended support. Security teams should also consider implementing runtime protections such as kernel address space layout randomization and exploit prevention mechanisms to reduce the effectiveness of potential exploitation attempts.