CVE-2010-4379 in RealPlayer
Summary
by MITRE
Heap-based buffer overflow in RealNetworks RealPlayer 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.4, RealPlayer Enterprise 2.1.2, Mac RealPlayer 11.0 through 11.1, Linux RealPlayer 11.0.2.1744, and possibly HelixPlayer 1.0.6 and other versions, allows remote attackers to have an unspecified impact via a crafted SIPR file.
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Analysis
by VulDB Data Team • 10/06/2021
The vulnerability identified as CVE-2010-4379 represents a critical heap-based buffer overflow affecting multiple versions of RealNetworks RealPlayer software across different platforms including Windows, Mac, and Linux operating systems. This security flaw exists within the media player's handling of SIPR (Speech Interchange File Format) files, which are commonly used for audio compression and playback. The vulnerability affects RealPlayer versions ranging from 11.0 through 11.1, along with specific service pack and enterprise versions, making it particularly concerning due to the widespread deployment of these media players in enterprise and consumer environments. The flaw allows remote attackers to execute arbitrary code or cause application crashes by simply crafting a malicious SIPR file that triggers the buffer overflow condition during file processing.
The technical implementation of this vulnerability stems from inadequate bounds checking within the RealPlayer application's memory management routines when processing SIPR audio files. When a specially crafted SIPR file is loaded, the application fails to properly validate the size of data structures before copying data into heap-allocated memory buffers. This results in data being written beyond the allocated buffer boundaries, potentially overwriting adjacent memory locations including function pointers, return addresses, or other critical program state information. The heap-based nature of the vulnerability means that attackers can manipulate heap metadata structures, leading to potential code execution or denial of service conditions. This type of vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions, and represents a classic example of memory safety issues in legacy software implementations.
The operational impact of CVE-2010-4379 extends beyond simple exploitation capabilities to encompass significant risks for organizations relying on RealPlayer for media playback. Given the widespread use of RealPlayer across corporate networks and the prevalence of SIPR files in various multimedia applications, this vulnerability could enable attackers to gain unauthorized access to systems, escalate privileges, or disrupt business operations through denial of service attacks. The remote exploitation capability means that attackers do not require local access to compromise systems, making the vulnerability particularly dangerous in enterprise environments where users might inadvertently download or open malicious media files from untrusted sources. Attackers could leverage this vulnerability to establish persistent access, deploy malware, or conduct reconnaissance activities within network environments, aligning with techniques described in the MITRE ATT&CK framework under initial access and execution phases.
Organizations affected by this vulnerability should implement immediate remediation measures including applying available security patches from RealNetworks, which were released to address the heap overflow conditions. System administrators should also consider implementing network-based controls such as content filtering and sandboxing mechanisms to prevent execution of potentially malicious media files. Additionally, user education programs should emphasize the importance of avoiding untrusted media file downloads and maintaining updated software versions. For environments where patching cannot be immediately implemented, network segmentation and application whitelisting controls can provide temporary mitigation. The vulnerability highlights the importance of regular security assessments and vulnerability management programs, particularly for legacy software systems that may not receive ongoing security support from vendors. Organizations should also consider migrating away from unsupported media players to more secure alternatives that follow modern security practices and receive regular security updates.