CVE-2010-4381 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, and Mac RealPlayer 11.0 through 12.0.0.1444 allows remote attackers to have an unspecified impact via a crafted AAC file.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 10/06/2021
The vulnerability identified as CVE-2010-4381 represents a critical heap-based buffer overflow affecting multiple versions of RealNetworks RealPlayer software across different platforms. This flaw exists within the media player's handling of Advanced Audio Coding format files, specifically when processing malformed or crafted AAC content that triggers memory corruption during audio decoding operations. The vulnerability impacts RealPlayer versions ranging from 11.0 through 11.1, RealPlayer SP 1.0 through 1.1.4, RealPlayer Enterprise 2.1.2, and Mac RealPlayer 11.0 through 12.0.0.1444, making it a widespread issue affecting both desktop and enterprise deployments.
The technical nature of this vulnerability stems from improper bounds checking within the AAC file parser implementation, where the software fails to adequately validate the size and structure of audio data elements before attempting to copy or process them into fixed-size memory buffers. This heap-based buffer overflow occurs when the application attempts to write more data into a heap-allocated memory region than it can accommodate, leading to memory corruption that can be exploited by remote attackers to execute arbitrary code or cause application crashes. The vulnerability's classification as heap-based indicates that the overflow affects dynamically allocated memory segments rather than stack-based buffers, which typically makes exploitation more complex but potentially more reliable in certain environments.
The operational impact of this vulnerability extends beyond simple denial of service scenarios, as it provides remote attackers with the capability to execute arbitrary code on vulnerable systems with the privileges of the user running RealPlayer. This represents a significant security risk in enterprise environments where users may inadvertently open maliciously crafted media files, potentially leading to complete system compromise. The unspecified impact mentioned in the CVE description suggests that the vulnerability could enable various attack vectors including privilege escalation, information disclosure, or complete system takeover depending on the execution environment and target system configuration. The vulnerability's remote exploitation capability means that attackers can deliver malicious AAC files through various vectors such as email attachments, web downloads, or malicious websites without requiring local system access.
Mitigation strategies for CVE-2010-4381 should prioritize immediate patching of affected RealPlayer versions with the vendor-provided security updates, as these releases contain the necessary code modifications to address the buffer overflow conditions. Organizations should implement network-based controls such as content filtering and sandboxing mechanisms to prevent execution of potentially malicious media files, particularly in environments where users may encounter untrusted content. System administrators should also consider disabling RealPlayer or other vulnerable media players in enterprise environments where the risk of exploitation is high, while implementing strict access controls and monitoring for unusual network traffic patterns that might indicate exploitation attempts. The vulnerability aligns with CWE-121 heap-based buffer overflow weakness and represents a technique that could be categorized under ATT&CK tactic TA0002 (execution) and technique T1059.007 (command and scripting interpreter) when exploited for code execution. Given the age of this vulnerability and its widespread impact, organizations should also consider implementing network segmentation and endpoint protection measures to reduce the attack surface and limit potential lateral movement if exploitation occurs.