CVE-2013-3299 in RealPlayer
Summary
by MITRE
RealNetworks RealPlayer 16.0.2.32 and earlier allows remote attackers to cause a denial of service (resource consumption or application crash) via an HTML document containing JavaScript code that constructs a long string.
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Analysis
by VulDB Data Team • 12/26/2024
The vulnerability identified as CVE-2013-3299 represents a significant denial of service flaw within RealNetworks RealPlayer software version 16.0.2.32 and earlier. This issue manifests when the affected media player processes specially crafted HTML documents that contain JavaScript code designed to construct excessively long strings. The flaw operates through a resource exhaustion mechanism that can lead to either application crashes or complete system resource consumption, effectively rendering the media player unusable and potentially disrupting user productivity. The vulnerability is particularly concerning as it demonstrates how web-based attacks can compromise desktop media applications through seemingly benign HTML content.
The technical implementation of this vulnerability stems from insufficient input validation and string handling within RealPlayer's JavaScript engine integration. When the media player encounters an HTML document containing JavaScript code that generates or manipulates extremely long strings, the application fails to properly manage memory allocation and processing resources. This lack of proper bounds checking allows attackers to craft malicious documents that can trigger buffer overflows or memory exhaustion conditions. The vulnerability aligns with CWE-129, which addresses improper validation of length of input buffers, and CWE-770, which covers allocation of resources without limits or refresh. The JavaScript execution environment within RealPlayer appears to lack adequate protection against excessive string manipulation operations that could consume system resources.
The operational impact of CVE-2013-3299 extends beyond simple application disruption to potentially enable more sophisticated attack vectors. An attacker could leverage this vulnerability to perform persistent denial of service attacks against targeted systems, particularly in environments where RealPlayer is frequently used for media consumption. The vulnerability's remote exploitability means that attackers do not need physical access to target systems, allowing for widespread impact through web-based delivery mechanisms. This flaw also demonstrates how multimedia applications can serve as attack surfaces for resource exhaustion attacks, which aligns with ATT&CK technique T1499.004 for network denial of service attacks. Organizations relying on RealPlayer for entertainment or professional media playback could experience service interruptions that affect business operations and user experience.
Mitigation strategies for this vulnerability should focus on immediate patch application as the primary defense mechanism, given that RealNetworks released updates addressing the specific JavaScript processing flaws. System administrators should implement network-based protections such as web application firewalls that can detect and block malicious HTML content containing excessive JavaScript string operations. Additionally, user education regarding the dangers of opening untrusted HTML documents and the importance of keeping media applications updated remains crucial. Organizations should consider implementing application whitelisting policies that restrict execution of RealPlayer to trusted environments only, while also monitoring for unusual resource consumption patterns that might indicate exploitation attempts. The vulnerability serves as a reminder of the importance of proper input validation in multimedia processing applications and the need for comprehensive security testing of scripting environments within media players.