CVE-2013-1300 in Windows
Summary
by MITRE
win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows Server 2012, and Windows RT does not properly handle objects in memory, which allows local users to gain privileges via a crafted application, aka "Win32k Memory Allocation Vulnerability."
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Analysis
by VulDB Data Team • 07/13/2025
The CVE-2013-1300 vulnerability represents a critical kernel-mode memory allocation flaw within the win32k.sys driver component of Microsoft Windows operating systems. This vulnerability affects a broad range of Microsoft operating systems including Windows XP SP2 and SP3, Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows Server 2012, and Windows RT. The flaw specifically resides in how the kernel-mode drivers handle memory objects, creating a privilege escalation opportunity for local attackers who can craft malicious applications to exploit this weakness.
The technical nature of this vulnerability stems from improper memory handling within the win32k.sys driver which manages user interface components and graphics operations in Windows. When the system processes certain memory allocation requests, the driver fails to properly validate or manage memory objects, leading to potential memory corruption that can be exploited to elevate privileges from standard user level to system level. This memory allocation vulnerability falls under the CWE-129 weakness category, which deals with improper validation of array indices, and aligns with ATT&CK technique T1068 for local privilege escalation through kernel-mode exploits. The vulnerability exploits the fundamental trust model of Windows kernel components where legitimate system processes can be manipulated to execute arbitrary code with elevated privileges.
The operational impact of CVE-2013-1300 is severe as it provides local attackers with a path to achieve system-level compromise without requiring network access or external attack vectors. Since the vulnerability exists within the kernel-mode driver, successful exploitation can result in complete system takeover, allowing attackers to install malware, modify system files, steal sensitive data, or establish persistent backdoors. The exploit typically requires local system access, making it particularly dangerous in environments where users have legitimate access to systems, as it can be leveraged by malicious insiders or compromised accounts. Organizations running affected Windows versions face significant risk, especially those with limited security controls or where users have elevated privileges. The vulnerability's exploitation can occur through simple crafted applications, making it accessible to attackers with basic programming skills and increasing the attack surface across multiple Windows versions.
Mitigation strategies for CVE-2013-1300 should focus on immediate patch management, as Microsoft released security updates addressing this specific vulnerability through the Microsoft Security Response Center. Organizations must ensure all affected systems receive the appropriate security patches, particularly those running legacy Windows versions such as Windows XP and Windows Server 2003 which are no longer supported. Additional protective measures include implementing application whitelisting policies to prevent unauthorized applications from executing, reducing user privileges where possible, and monitoring system logs for unusual memory allocation patterns. Network segmentation and endpoint protection solutions can provide additional layers of defense, while regular security assessments should identify systems that may not have received critical updates. The vulnerability also highlights the importance of maintaining up-to-date security patches and implementing robust vulnerability management processes to prevent similar issues from compromising system integrity.