CVE-2010-4389 in RealPlayer
Summary
by MITRE
Heap-based buffer overflow in the cook codec in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.5, and Linux RealPlayer 11.0.2.1744 allows remote attackers to execute arbitrary code via unspecified data in the initialization buffer.
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Analysis
by VulDB Data Team • 10/07/2021
The vulnerability identified as CVE-2010-4389 represents a critical heap-based buffer overflow affecting multiple versions of RealNetworks RealPlayer software across different platforms. This flaw exists within the cook codec implementation which is responsible for handling audio data compression and decompression. The vulnerability specifically manifests when processing malformed initialization buffer data, creating a condition where attacker-controlled input can overflow heap memory allocations. The affected versions include RealPlayer 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.5, and Linux RealPlayer 11.0.2.1744, indicating this was a widespread issue affecting the software ecosystem. The heap-based nature of the vulnerability means that memory corruption occurs in the heap segment rather than the stack, making exploitation more complex but potentially more reliable than stack-based buffer overflows.
The technical implementation of this vulnerability stems from insufficient bounds checking within the cook codec's buffer handling routines. When the codec processes specially crafted initialization data, it fails to properly validate the size of incoming data against allocated buffer boundaries. This allows an attacker to write beyond the intended memory allocation, potentially overwriting adjacent heap metadata or other critical data structures. The unspecified nature of the data format suggests that multiple attack vectors could be exploited, including various media file formats that utilize the cook codec for audio processing. The vulnerability is particularly dangerous because it can be triggered through remote code execution, meaning an attacker could deliver malicious content through network-based delivery mechanisms such as web pages, email attachments, or streaming media.
The operational impact of CVE-2010-4389 extends beyond simple code execution, as it represents a complete compromise of the affected system's security posture. Successful exploitation allows attackers to execute arbitrary code with the privileges of the user running RealPlayer, potentially leading to full system compromise. The vulnerability affects multiple operating systems including Windows and Linux platforms, demonstrating its broad reach across different environments. This type of vulnerability is classified under CWE-121 as "Stack-based Buffer Overflow" and more specifically aligns with CWE-787 "Out-of-bounds Write" which occurs when a program writes data past the end of a buffer allocated in memory. From an adversarial perspective, this vulnerability maps to ATT&CK technique T1059.007 for "Command and Scripting Interpreter: PowerShell" and T1068 for "Exploitation for Privilege Escalation" as attackers can leverage the initial code execution to establish persistent access and escalate privileges.
Mitigation strategies for CVE-2010-4389 require immediate action from system administrators and security teams. The most effective approach involves patching or upgrading to versions of RealPlayer that contain fixed implementations of the cook codec with proper bounds checking and input validation. Organizations should also implement network segmentation and access controls to limit exposure to potentially malicious content, particularly in environments where users may encounter untrusted media files. Additionally, security awareness training should emphasize the dangers of opening unknown media files or visiting untrusted websites that could deliver malicious content designed to exploit this vulnerability. The vulnerability demonstrates the importance of maintaining up-to-date software and implementing defense-in-depth strategies that include network monitoring, intrusion detection systems, and regular vulnerability assessments to identify and remediate similar issues before they can be exploited by malicious actors.