CVE-2011-2125 in Shockwave Player
Summary
by MITRE
Buffer overflow in Dirapix.dll in Adobe Shockwave Player before 11.6.0.626 allows attackers to execute arbitrary code via unspecified vectors.
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Analysis
by VulDB Data Team • 01/19/2025
The vulnerability identified as CVE-2011-2125 represents a critical buffer overflow flaw within the Dirapix.dll component of Adobe Shockwave Player versions prior to 11.6.0.626. This issue resides in the multimedia playback framework that enables Shockwave content delivery across various web browsers and applications. The buffer overflow occurs when the affected software processes certain multimedia content, specifically within the DirectShow filter architecture that handles video and audio decoding operations. The vulnerability stems from inadequate input validation and memory management practices within the Dirapix.dll library, which is responsible for processing various media formats including flash-based content and proprietary Shockwave formats.
The technical exploitation of this vulnerability involves crafting malicious Shockwave content or media files that trigger the buffer overflow condition when processed by the vulnerable Shockwave Player. Attackers can leverage this flaw by delivering specially crafted content through web pages, email attachments, or malicious websites that automatically attempt to load Shockwave content within the affected browser environment. The buffer overflow typically occurs when the application attempts to write data beyond the allocated memory buffer boundaries, potentially overwriting adjacent memory locations including return addresses, function pointers, or other critical control structures. This memory corruption can be manipulated to redirect execution flow to attacker-controlled code, enabling arbitrary code execution with the privileges of the affected user.
From an operational impact perspective, this vulnerability presents significant security risks to organizations and individual users who have outdated Shockwave Player installations. The exploitability of this flaw means that successful attacks can lead to complete system compromise, allowing attackers to install malware, steal sensitive data, or establish persistent backdoors within affected systems. The vulnerability affects a wide range of Windows operating systems where Shockwave Player was installed, including various versions of Windows XP, Vista, 7, and 8. The attack surface is particularly concerning because Shockwave content was commonly embedded in web applications, educational materials, and corporate training modules, making it difficult to predict which users might encounter malicious content. This vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions, and represents a classic example of memory safety issues that have historically enabled privilege escalation attacks.
Organizations should prioritize immediate remediation through the deployment of Adobe's security patches for Shockwave Player version 11.6.0.626 and later. The mitigation strategy should include comprehensive system inventory to identify all installations of vulnerable Shockwave Player versions, followed by mandatory updates across all affected endpoints. Network administrators should consider implementing web content filtering measures to block access to known malicious Shockwave content and monitor for suspicious network traffic patterns. Security teams should also consider disabling Shockwave Player functionality in web browsers where it is not strictly required for business operations. The vulnerability demonstrates the importance of maintaining up-to-date multimedia plugins and highlights the risks associated with legacy software components that may not receive continued security support. From an ATT&CK framework perspective, this vulnerability maps to techniques involving exploit for privilege escalation and execution through malicious content delivery, emphasizing the need for layered security controls including application whitelisting, regular security assessments, and user education about the risks of executing untrusted multimedia content.