CVE-2011-2946 in RealPlayer
Summary
by MITRE
Unspecified vulnerability in an ActiveX control in RealNetworks RealPlayer 11.0 through 11.1 and 14.0.0 through 14.0.5, RealPlayer SP 1.0 through 1.1.5, and RealPlayer Enterprise 2.0 through 2.1.5 allows remote attackers to execute arbitrary code via unknown vectors.
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Analysis
by VulDB Data Team • 11/18/2021
The vulnerability identified as CVE-2011-2946 represents a critical security flaw within RealNetworks RealPlayer software across multiple versions including the 11.x series through 11.1, 14.x series through 14.0.5, RealPlayer SP 1.0 through 1.1.5, and RealPlayer Enterprise 2.0 through 2.1.5. This issue specifically affects the ActiveX control component which serves as a browser integration mechanism for multimedia content playback. The unspecified nature of the vulnerability vectors indicates that attackers could exploit various pathways to achieve remote code execution, making the flaw particularly dangerous as it lacks clear mitigation patterns or specific attack signatures that would allow for targeted defensive measures.
The technical implementation of this vulnerability stems from the ActiveX control's insufficient input validation and memory management practices within the RealPlayer software ecosystem. ActiveX controls are inherently dangerous components when poorly implemented as they operate with elevated privileges on Windows systems and can directly interact with the operating system's core functions. The flaw likely manifests through buffer overflows, memory corruption issues, or improper handling of user-supplied data within the control's processing routines. These conditions create opportunities for attackers to inject malicious code that executes with the privileges of the running process, typically running with user-level permissions but potentially escalated through additional exploitation techniques.
From an operational perspective, this vulnerability presents a significant risk to enterprise environments where RealPlayer remains installed on user systems. The remote execution capability means attackers can exploit the flaw without requiring physical access to target systems, making it particularly attractive for large-scale attacks. The widespread deployment of RealPlayer across corporate networks, combined with the relatively low detection rate of such vulnerabilities, creates an ideal environment for persistent threats to establish footholds. Network security teams face challenges in identifying and mitigating this threat due to the lack of specific indicators of compromise and the broad attack surface that the ActiveX control presents. The vulnerability aligns with CWE-119 which addresses weaknesses in memory management and buffer overflows, and represents a classic example of how legacy multimedia software components can introduce persistent security risks.
The attack surface for this vulnerability extends beyond simple exploitation to include potential privilege escalation scenarios and lateral movement opportunities within compromised networks. Attackers leveraging this flaw could potentially establish persistent backdoors or deploy additional malware payloads through the executed code. The lack of specific attack vectors in the vulnerability description suggests that multiple exploitation methods might be possible, including crafted media files, malicious web content, or even social engineering approaches that trick users into interacting with compromised content. Organizations should consider implementing network-based intrusion detection systems that monitor for unusual ActiveX control behavior and ensure comprehensive patch management processes are in place to address this and similar vulnerabilities. This vulnerability demonstrates the ongoing challenges in securing multimedia playback software and the critical importance of regular security assessments for widely deployed applications. The issue represents a clear violation of the principle of least privilege and highlights the dangers of legacy software components that continue to operate in modern security environments without adequate security hardening.