CVE-2009-1327 in WM Downloader
Summary
by MITRE
Stack-based buffer overflow in Mini-stream WM Downloader 3.0.0.9 allows remote attackers to execute arbitrary code via a long URI in a playlist (.m3u) file.
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Analysis
by VulDB Data Team • 11/26/2024
The vulnerability identified as CVE-2009-1327 represents a critical stack-based buffer overflow flaw in Mini-stream WM Downloader version 3.0.0.9 that exposes systems to remote code execution attacks. This vulnerability specifically manifests when the affected software processes playlist files with maliciously crafted uniform resource identifiers. The flaw resides in the application's insufficient input validation mechanisms for handling URI data within m3u playlist files, creating a condition where attacker-controlled data can overwrite adjacent memory locations on the stack. Such buffer overflow conditions are particularly dangerous because they can be exploited to overwrite return addresses and function pointers, potentially allowing attackers to redirect program execution flow to malicious code. The vulnerability demonstrates characteristics consistent with CWE-121 Stack-based buffer overflow, which falls under the broader category of memory safety issues that have historically plagued software applications. This type of vulnerability aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter, as successful exploitation could enable adversaries to execute arbitrary commands on compromised systems.
The technical exploitation of this vulnerability requires an attacker to craft a malicious m3u playlist file containing an overly long URI string that exceeds the allocated buffer space in the Mini-stream WM Downloader application. When the vulnerable software attempts to parse and process this malformed URI, the excessive data overflows the stack buffer and corrupts adjacent memory regions, potentially including the return address of the calling function. This memory corruption can be leveraged to inject and execute malicious code with the privileges of the affected application. The vulnerability affects systems running the specific version of Mini-stream WM Downloader, making it particularly relevant for organizations that may still be using legacy media downloading applications. The attack vector is remote, meaning that an attacker can deliver the malicious playlist file through various means such as email attachments, compromised websites, or peer-to-peer networks without requiring local access to the target system.
The operational impact of this vulnerability extends beyond simple remote code execution, as it represents a significant security risk for users who regularly download media content through potentially untrusted sources. Organizations that deploy this software in enterprise environments face potential compromise of user workstations and could experience unauthorized access to sensitive data. The vulnerability also highlights the importance of input validation and memory safety practices in media processing applications that handle external data formats. Successful exploitation could result in complete system compromise, data theft, or the installation of persistent backdoors. The risk is compounded by the fact that m3u playlist files are commonly used in media streaming and downloading applications, making this vulnerability potentially widespread across various software implementations. Security professionals should consider this vulnerability as part of broader application security assessments and prioritize remediation efforts to prevent exploitation through social engineering or automated attack vectors.
Mitigation strategies for CVE-2009-1327 should include immediate software updates or patches from the vendor, as well as network-based protections such as intrusion detection systems that can identify and block malicious playlist files. Organizations should implement strict input validation policies for all external data sources and consider deploying application whitelisting solutions to prevent execution of untrusted software. The vulnerability underscores the need for regular security assessments of legacy applications and the importance of maintaining up-to-date software inventories to identify potentially vulnerable components. Additionally, security awareness training for users regarding the dangers of downloading content from untrusted sources can help reduce the risk of exploitation. System administrators should also consider implementing network segmentation and monitoring to detect suspicious network traffic patterns associated with exploitation attempts. The remediation process should include thorough testing of patches to ensure they do not introduce compatibility issues with existing workflows while maintaining the security posture against this specific buffer overflow vulnerability.