CVE-2008-7079 in ShowTime
Summary
by MITRE
Buffer overflow in Nero ShowTime 5.0.15.0 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via a long entry in a .M3U playlist file. NOTE: this issue might be related to CVE-2008-0619.
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Analysis
by VulDB Data Team • 05/23/2025
The vulnerability identified as CVE-2008-7079 represents a critical buffer overflow flaw within Nero ShowTime version 5.0.15.0 that manifests through maliciously crafted media playlist files. This vulnerability specifically affects the handling of .M3U playlist files which are commonly used to organize and play multimedia content in various media players. The buffer overflow occurs when the application processes a specially crafted playlist entry that exceeds the allocated buffer space, leading to unpredictable behavior and potential system compromise.
The technical implementation of this vulnerability stems from inadequate input validation and memory management within the Nero ShowTime media player's playlist parsing functionality. When processing a malicious .M3U file containing an excessively long entry, the application fails to properly bounds-check the input data before copying it into fixed-size memory buffers. This classic buffer overflow condition allows attackers to overwrite adjacent memory locations, potentially corrupting program execution flow and creating opportunities for arbitrary code execution. The vulnerability operates at the application layer and requires no special privileges to exploit, making it particularly dangerous in remote attack scenarios.
The operational impact of this vulnerability extends beyond simple denial of service conditions to potentially enable remote code execution capabilities. When successfully exploited, the buffer overflow can cause the media player to crash or become unresponsive, resulting in a denial of service for legitimate users. However, the more severe implications arise from the potential for arbitrary code execution, which could allow attackers to gain control of the affected system. This vulnerability affects users who frequently use .M3U playlist files or encounter such files through web browsing, email attachments, or file sharing networks, creating a wide attack surface.
Security practitioners should recognize this vulnerability as aligning with CWE-121, which describes heap-based buffer overflow conditions, and potentially CWE-787, which covers out-of-bounds writes in heap-based buffers. The attack pattern associated with this vulnerability corresponds to techniques described in the MITRE ATT&CK framework under the T1203 category for legitimate program execution, where attackers leverage application vulnerabilities to execute malicious code. The vulnerability's remote exploitability and potential for privilege escalation make it particularly concerning for enterprise environments where media players are commonly used for entertainment and productivity purposes.
Mitigation strategies should prioritize immediate patching of affected systems with the latest version of Nero ShowTime that addresses this buffer overflow vulnerability. System administrators should implement network segmentation and access controls to limit exposure to potentially malicious playlist files. Additionally, organizations should consider deploying application whitelisting solutions that restrict execution of untrusted media files and implement regular security assessments to identify similar vulnerabilities in other media processing applications. The vulnerability's relationship to CVE-2008-0619 suggests that similar buffer overflow issues may exist in related software components, warranting comprehensive vulnerability scanning and remediation efforts across the entire media processing stack.