CVE-2009-2817 in iTunes
Summary
by MITRE
Buffer overflow in Apple iTunes before 9.0.1 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted .pls file.
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Analysis
by VulDB Data Team • 03/30/2025
The vulnerability identified as CVE-2009-2817 represents a critical buffer overflow flaw in Apple iTunes software versions prior to 9.0.1. This security weakness specifically manifests when the application processes maliciously crafted .pls playlist files, which are commonly used for internet radio streaming and media playback. The buffer overflow occurs during the parsing of these playlist files, where insufficient input validation allows attackers to overwrite adjacent memory locations. This vulnerability falls under the CWE-121 category of stack-based buffer overflow, where the attacker can manipulate the program's execution flow by overwriting return addresses and other critical stack data. The flaw exists because iTunes fails to properly validate the length of data read from .pls files, particularly when handling the Title field or other metadata elements that are typically limited in size.
The operational impact of this vulnerability extends beyond simple application crashes to enable full remote code execution capabilities. Attackers can craft malicious .pls files that, when opened by an unpatched iTunes client, will trigger the buffer overflow condition and potentially allow arbitrary code execution with the privileges of the iTunes process. This represents a significant threat vector since .pls files are commonly distributed through web content, email attachments, or malicious websites where users might unknowingly click on links that initiate iTunes to process the crafted file. The vulnerability demonstrates how media playback applications can become attack vectors for privilege escalation, as iTunes typically runs with elevated privileges on user systems. The denial of service aspect occurs when the buffer overflow causes the application to crash and terminate unexpectedly, disrupting legitimate media playback functionality and potentially providing a means for persistent disruption attacks.
Security professionals should note that this vulnerability aligns with ATT&CK technique T1059.007 for command and scripting interpreter, as successful exploitation could allow attackers to execute arbitrary commands on the target system. The attack surface is particularly concerning given iTunes' widespread deployment across corporate and personal environments, making it an attractive target for both automated exploits and targeted attacks. Organizations should prioritize immediate patching of affected iTunes versions to prevent exploitation, as the vulnerability does not require user interaction beyond opening the malicious file. The mitigation strategy should include network-based filtering to block .pls file downloads from untrusted sources and endpoint protection measures that monitor for suspicious file processing activities. Additionally, security teams should implement monitoring for unusual iTunes process behavior and consider restricting user privileges when running iTunes to limit potential damage from successful exploitation attempts. The vulnerability also highlights the importance of input validation in media processing applications and underscores the need for robust memory safety practices in software development, particularly for applications that process untrusted media content from external sources.