CVE-2013-0004 in .NET Framework
Summary
by MITRE
Microsoft .NET Framework 1.0 SP3, 1.1 SP1, 2.0 SP2, 3.0 SP2, 3.5, 3.5.1, 4, and 4.5 does not properly validate the permissions of objects in memory, which allows remote attackers to execute arbitrary code via (1) a crafted XAML browser application (XBAP) or (2) a crafted .NET Framework application, aka "Double Construction Vulnerability."
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Analysis
by VulDB Data Team • 04/20/2021
The CVE-2013-0004 vulnerability represents a critical permission validation flaw within Microsoft .NET Framework versions spanning from 1.0 SP3 through 4.5. This vulnerability specifically targets the framework's object memory permission handling mechanisms, creating a pathway for remote code execution attacks. The flaw manifests in the improper validation of object permissions within memory structures, allowing malicious actors to bypass security boundaries that should normally restrict code execution. The vulnerability is categorized under CWE-264, which addresses permissions, privileges, and access control issues, and aligns with ATT&CK technique T1059.001 for command and scripting interpreter execution.
The technical exploitation of this vulnerability occurs through two primary vectors: crafted XAML browser applications and malicious .NET Framework applications. XAML browser applications represent a specific class of applications that run within web browsers and can access certain system resources. When a malicious XBAP is crafted to exploit this vulnerability, it can manipulate the memory permission validation process to elevate privileges and execute arbitrary code. The second vector involves crafting .NET Framework applications that leverage the same memory permission flaw, potentially allowing attackers to bypass security restrictions that normally prevent code from accessing restricted system resources.
The operational impact of this vulnerability extends significantly across enterprise environments that utilize affected .NET Framework versions. Organizations running applications built on these framework versions face potential compromise through remote code execution attacks that could lead to complete system takeover. The vulnerability affects not only web applications but also desktop applications that rely on the .NET Framework, creating a broad attack surface. Attackers could leverage this vulnerability to install malware, establish backdoors, or perform data exfiltration from compromised systems. The double construction aspect of the vulnerability refers to the way malicious code can exploit memory allocation patterns to construct objects with elevated privileges.
Mitigation strategies for CVE-2013-0004 primarily involve applying Microsoft's security patches and updates to affected .NET Framework versions. Organizations should prioritize immediate patching of all systems running vulnerable framework versions, particularly those exposed to external networks. Additional defensive measures include implementing network segmentation to limit exposure, monitoring for suspicious XAML browser application usage, and applying application whitelisting policies to restrict execution of untrusted .NET applications. The vulnerability demonstrates the importance of proper memory management and permission validation in application frameworks, serving as a reminder of the critical need for comprehensive security testing and validation of object handling mechanisms within runtime environments. Security teams should also consider implementing intrusion detection systems to monitor for potential exploitation attempts targeting this specific vulnerability pattern.