Adobe Flash Player Matrix3D copyRawDataTo Integer Overflow Remote Code Execution (CVE-2012-5054)

1. Vulnerability Overview & Root Cause

This vulnerability (CVE-2012-5054) is an integer overflow (CWE-190) located within the copyRawDataTo method of the Matrix3D class in Adobe Flash Player. The copyRawDataTo method is responsible for copying 3D transformation matrix data into a Vector object. Due to insufficient validation of the input arguments, passing extremely large or malformed integer values causes an integer overflow during the internal memory allocation size calculation. This results in the allocation of a buffer that is significantly smaller than required.

2. Exploitation Mechanics & Attack Scenario

An attacker exploits this vulnerability by hosting a specially crafted SWF file containing malicious ActionScript code on a website or distributing it via email attachments. When a victim visits the compromised page and the SWF file is loaded, the Matrix3D.copyRawDataTo() method is invoked with anomalous arguments. The resulting integer overflow leads to an undersized heap buffer allocation. Subsequent copy operations write matrix data beyond the allocated boundary, triggering a heap-based buffer overflow. This allows the attacker to corrupt memory structures, hijack the execution flow, and execute arbitrary shellcode within the context of the running process.

3. Infrastructure & Business Impact

With a CVSS score of 8.8 and its inclusion in the CISA KEV catalog, this vulnerability represents a high-severity threat that has been actively exploited in the wild. Successful exploitation allows complete compromise of the victim's endpoint, enabling attackers to install malware, exfiltrate sensitive data, or establish a persistent foothold to pivot further into the corporate network.