CVE-2005-2052 in RealPlayer
Summary
by MITRE
Heap-based buffer overflow in vidplin.dll in RealPlayer 10 and 10.5 (6.0.12.1040 through 1069), RealOne Player v1 and v2, RealPlayer 8 and RealPlayer Enterprise allows remote attackers to execute arbitrary code via an .avi file with a modified strf structure value.
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Analysis
by VulDB Data Team • 07/05/2021
The vulnerability described in CVE-2005-2052 represents a critical heap-based buffer overflow affecting multiple versions of RealNetworks RealPlayer software including RealPlayer 10 and 10.5, RealOne Player v1 and v2, and RealPlayer 8 and Enterprise editions. This flaw resides within the vidplin.dll component which handles video playback operations, specifically when processing avi files containing manipulated strf structure values. The vulnerability operates at the application level and demonstrates a classic memory corruption issue that has been extensively documented in cybersecurity literature.
The technical exploitation of this vulnerability occurs when a maliciously crafted avi file is processed by the affected RealPlayer versions. The strf structure within the avi file format contains crucial header information about the video stream, and when this structure is modified in a specific way, it triggers an improper bounds checking mechanism within the vidplin.dll library. This leads to a heap-based buffer overflow condition where attacker-controlled data can overwrite adjacent memory locations, potentially corrupting the program's execution flow. The vulnerability is classified under CWE-121 as a heap-based buffer overflow, which directly maps to the attack pattern described in the MITRE ATT&CK framework under T1059.007 for execution through command and script interpreters.
The operational impact of this vulnerability is severe as it enables remote code execution without any user interaction requirements beyond opening the malicious file. An attacker can craft an avi file with specially constructed strf values that, when played by an affected RealPlayer installation, will cause the application to crash or more dangerously, execute arbitrary code with the privileges of the user running the application. This makes the vulnerability particularly dangerous in enterprise environments where users may unknowingly open malicious attachments or visit compromised websites hosting the malicious content. The exploitability is high due to the ease of delivery through email attachments or web-based content, and the fact that many users have RealPlayer installed as a default media player.
Mitigation strategies for CVE-2005-2052 should focus on immediate patching of affected software versions, as RealNetworks released updates to address this specific vulnerability. Organizations should implement network-based restrictions to block avi file attachments or content from untrusted sources, particularly in email systems and web proxies. Additionally, users should be educated about the risks of opening unknown or unexpected avi files, and system administrators should consider disabling automatic playback of media files in web browsers or email clients. The vulnerability also highlights the importance of proper input validation and bounds checking in multimedia processing libraries, as recommended by security best practices outlined in the OWASP Top Ten and other industry standards for secure coding practices. Regular security assessments and vulnerability scanning should be conducted to identify and remediate similar issues in other media processing components within the organization's software ecosystem.