CVE-2013-1257 in Windows
Summary
by MITRE
Race condition in 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, R2, and R2 SP1, and Windows 7 Gold and SP1 allows local users to gain privileges, and consequently read the contents of arbitrary kernel memory locations, via a crafted application, a different vulnerability than other CVEs listed in MS13-016.
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Analysis
by VulDB Data Team • 05/05/2021
The vulnerability described in CVE-2013-1257 represents a critical race condition flaw within the win32k.sys kernel-mode driver component of Microsoft Windows operating systems. This issue affects a broad range of Windows versions including XP SP2 and SP3, Windows Server 2003 SP2, Vista SP2, Windows Server 2008 SP2 and R2, and Windows 7 Gold and SP1. The race condition occurs in the kernel-mode drivers responsible for handling user interface components and graphics operations, specifically within the win32k.sys file that manages windowing system functionality. This vulnerability is particularly concerning because it allows local attackers with standard user privileges to escalate their access level and gain unauthorized access to kernel memory spaces. The flaw stems from improper synchronization mechanisms that fail to adequately protect shared resources during concurrent access scenarios, creating a window where malicious code can exploit timing dependencies to manipulate system state.
The technical exploitation of this vulnerability involves a local attacker crafting a malicious application that takes advantage of the race condition in win32k.sys to execute arbitrary code with kernel-level privileges. This race condition specifically manifests when multiple threads or processes attempt to access shared kernel resources simultaneously without proper locking mechanisms. The attacker's application must carefully time its operations to exploit the window between resource allocation and access validation, allowing it to manipulate kernel data structures or memory locations that should remain protected. This type of vulnerability falls under the CWE-362 category of "Concurrent Execution using Shared Resource with Improper Synchronization" and aligns with ATT&CK technique T1068 which covers "Exploitation for Privilege Escalation." The exploitation process typically involves creating multiple threads that race to access the vulnerable kernel object, ultimately allowing the malicious application to read arbitrary kernel memory locations and potentially extract sensitive information or manipulate system behavior.
The operational impact of CVE-2013-1257 extends beyond simple privilege escalation, as it fundamentally compromises the security model of affected Windows systems. Successful exploitation enables attackers to read kernel memory contents which may contain sensitive data such as passwords, encryption keys, or other confidential information stored in memory. This capability represents a severe threat to system integrity and confidentiality, as it bypasses traditional user-mode security boundaries and provides direct access to the core operating system components. The vulnerability's presence in multiple Windows versions means that organizations running any of the affected operating systems face significant risk, particularly in environments where local user accounts exist or where privilege escalation attacks could be mounted by malicious insiders. The vulnerability's classification as a local privilege escalation issue means that attackers do not need network access or remote exploitation capabilities, making it particularly dangerous in scenarios where users have legitimate access to systems but could potentially abuse their privileges.
Mitigation strategies for CVE-2013-1257 should focus on both immediate patching and operational security enhancements. Microsoft released security update MS13-016 that addresses this vulnerability, and organizations must ensure all affected systems receive this patch immediately. However, additional defensive measures include implementing least privilege principles to limit local user access, monitoring for suspicious process behavior, and employing kernel-mode exploit detection systems. The vulnerability's nature suggests that traditional antivirus solutions may not detect exploitation attempts, making behavioral monitoring and integrity checking of kernel components essential. System administrators should also consider implementing application whitelisting policies to prevent unauthorized applications from running on affected systems. From a compliance standpoint, this vulnerability demonstrates the importance of maintaining up-to-date security patches and highlights the risks associated with running unsupported operating systems. Organizations should also conduct regular security assessments to identify systems running vulnerable versions of Windows and ensure proper patch management procedures are in place to prevent similar vulnerabilities from being exploited in the future.