CVE-2013-3899 in Windows
Summary
by MITRE
win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 does not properly validate addresses, which allows local users to gain privileges via a crafted application, aka "Win32k Memory Corruption Vulnerability."
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Analysis
by VulDB Data Team • 06/03/2021
The CVE-2013-3899 vulnerability represents a critical memory corruption flaw within the win32k.sys kernel-mode driver component of Microsoft Windows operating systems. This vulnerability specifically affects Windows XP Service Pack 2 and 3, as well as Windows Server 2003 Service Pack 2, making it a legacy issue that persisted across multiple versions of the windows ecosystem. The vulnerability resides in the kernel-mode drivers that handle graphical user interface operations, particularly those related to window management and user interface rendering. The flaw manifests when the win32k.sys driver fails to properly validate memory addresses during certain operations, creating a condition where malicious code can manipulate kernel memory structures.
The technical nature of this vulnerability stems from insufficient input validation within the kernel-mode driver, specifically in how it processes user-mode requests related to window management functions. When a crafted application attempts to interact with the win32k.sys driver through specific API calls, the driver's inadequate address validation allows for memory corruption that can be exploited to escalate privileges from user-level to kernel-level execution. This type of vulnerability falls under the CWE-125 weakness category, which describes out-of-bounds read conditions that can lead to privilege escalation. The vulnerability is classified as a local privilege escalation issue because it requires a user to run a malicious application, but once exploited, it provides full system compromise capabilities.
The operational impact of CVE-2013-3899 is severe and multifaceted within enterprise environments where legacy windows systems remain operational. Attackers who successfully exploit this vulnerability can achieve complete system compromise, gaining the ability to execute arbitrary code with kernel-level privileges, install persistent backdoors, modify system files, and potentially establish footholds for further lateral movement within network infrastructures. The vulnerability's classification under the MITRE ATT&CK framework places it within the privilege escalation tactics, specifically targeting the 'Windows Kernel' component for exploitation. Organizations running unsupported windows versions are particularly vulnerable to this attack vector, as the vulnerability has been widely documented and exploited in various threat campaigns targeting legacy systems.
Mitigation strategies for CVE-2013-3899 primarily focus on immediate remediation through official microsoft security updates, though these patches are only available for supported systems. Organizations should implement comprehensive patch management processes to ensure all windows systems receive security updates promptly. Additional protective measures include implementing application whitelisting policies to prevent execution of unauthorized applications, disabling unnecessary graphical services where possible, and conducting regular security assessments of legacy systems. The vulnerability demonstrates the importance of maintaining current security patches and highlights the risks associated with running unsupported operating systems, as these legacy systems often contain unpatched vulnerabilities that remain attractive targets for attackers. Security teams should also consider network segmentation and monitoring to detect potential exploitation attempts, as the vulnerability's exploitation typically generates specific patterns of kernel-mode activity that can be flagged by intrusion detection systems.