CVE-2009-3791 in Flash Media Server
Summary
by MITRE
Unspecified vulnerability in Adobe Flash Media Server (FMS) before 3.5.3 allows attackers to cause a denial of service (resource exhaustion) via unknown vectors.
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Analysis
by VulDB Data Team • 04/23/2025
Adobe Flash Media Server version 3.5.2 and earlier contains an unspecified vulnerability that enables remote attackers to execute denial of service attacks through resource exhaustion. This vulnerability resides within the server's processing mechanisms and can be exploited without authentication, making it particularly dangerous in production environments where FMS serves multimedia content and streaming services. The unspecified nature of the vulnerability vectors suggests that multiple attack paths may exist, potentially including malformed data handling, connection management issues, or memory allocation problems within the server's core components. The impact of this vulnerability manifests as resource exhaustion, which can lead to complete service unavailability and system instability. Attackers can exploit this weakness by sending specially crafted requests or streams that cause the server to consume excessive CPU cycles, memory, or network bandwidth, ultimately resulting in the server becoming unresponsive to legitimate requests. This type of vulnerability directly relates to CWE-400 which addresses unspecified resource exhaustion issues in software systems, and it aligns with ATT&CK technique T1499.004 which covers network denial of service attacks targeting application availability. The vulnerability affects organizations relying on Flash Media Server for content delivery, streaming media services, and real-time communication platforms, particularly those in media, broadcasting, and enterprise communication sectors. The exploitation of this vulnerability can result in significant business disruption, revenue loss, and reputational damage for affected organizations. Organizations should prioritize immediate patching to version 3.5.3 or later, as this update addresses the underlying resource management flaws that enable the denial of service conditions. Additionally, network monitoring should be implemented to detect unusual resource consumption patterns that might indicate exploitation attempts, and access controls should be enforced to limit exposure to trusted networks only. Security teams should also consider implementing rate limiting and connection throttling mechanisms as temporary mitigations while full patches are deployed. The vulnerability demonstrates the critical importance of maintaining up-to-date software components and the potential consequences of running legacy systems that may contain undiscovered security flaws. Organizations should conduct comprehensive vulnerability assessments of their Flash Media Server deployments and ensure proper network segmentation to minimize the impact of potential exploitation attempts. This vulnerability serves as a reminder of the inherent risks in multimedia streaming platforms and the necessity of robust resource management and monitoring within server applications.