CVE-2012-2408 in RealPlayer
Summary
by MITRE
The AAC SDK in RealNetworks RealPlayer before 15.0.6.14, RealPlayer SP 1.0 through 1.1.5, and Mac RealPlayer before 12.0.1.1750 allows remote attackers to cause a denial of service (heap memory corruption) or possibly have unspecified other impact via a crafted AAC file that is not properly handled during decoding.
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Analysis
by VulDB Data Team • 12/13/2021
The vulnerability identified as CVE-2012-2408 represents a critical heap memory corruption flaw within the Advanced Audio Coding SDK implementation in RealNetworks RealPlayer software across multiple versions. This vulnerability specifically affects desktop and mobile platforms including Windows and Mac operating systems, with impacted versions spanning RealPlayer 15.0.6.14 and earlier, RealPlayer SP 1.0 through 1.1.5, and Mac RealPlayer 12.0.1.1750 and earlier. The flaw manifests when the application processes maliciously crafted AAC audio files that exploit improper handling during the decoding phase, creating conditions that can lead to system instability and potential exploitation.
The technical nature of this vulnerability stems from inadequate input validation and memory management within the AAC decoding component of the RealPlayer SDK. When a specially crafted AAC file is processed, the decoder fails to properly validate or sanitize the audio data structure, leading to heap memory corruption. This memory corruption occurs during the parsing and interpretation of audio frame data, where the application attempts to allocate or manipulate heap memory without proper bounds checking or error handling. The vulnerability falls under CWE-121, heap-based buffer overflow, and specifically relates to improper handling of memory allocation during audio decoding operations.
The operational impact of this vulnerability extends beyond simple denial of service, as the heap corruption can potentially enable more sophisticated attacks. Remote attackers can leverage this flaw to cause system crashes and application instability, effectively rendering the media player unusable. In some configurations, the vulnerability may provide a pathway for privilege escalation or code execution, though the exact nature of these additional impacts remains unspecified in the original vulnerability report. The vulnerability demonstrates characteristics consistent with the attack pattern described in the MITRE ATT&CK framework under T1203, legitimate user privileges, and T1068, exploit for privilege escalation, when properly chained with other vulnerabilities or attack vectors.
Mitigation strategies for CVE-2012-2408 require immediate patching of affected RealPlayer versions to the latest secure releases from RealNetworks. Organizations should implement network segmentation to prevent unauthorized access to systems running vulnerable RealPlayer versions, particularly in environments where users may encounter untrusted media content. System administrators should consider disabling or removing RealPlayer installations from critical systems where the software is not essential for business operations. Additionally, network-based intrusion detection systems should be configured to monitor for suspicious media file handling patterns, and users should be educated about the risks of opening untrusted audio files. The vulnerability highlights the importance of regular software updates and the need for proper input validation in multimedia processing libraries, particularly those handling compressed audio formats that may contain complex data structures requiring careful memory management.