CVE-2009-1068 in BS.Player
Summary
by MITRE
Stack-based buffer overflow in BS.Player (bsplayer) 2.32 Build 975 Free and 2.34 Build 980 PRO and earlier allows remote attackers to cause a denial of service (application crash) or execute arbitrary code via a long hostname in a .bsl playlist file.
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Analysis
by VulDB Data Team • 04/19/2025
The vulnerability identified as CVE-2009-1068 represents a critical stack-based buffer overflow flaw within BS.Player media player software versions 2.32 Build 975 Free and 2.34 Build 980 PRO and earlier. This security weakness specifically manifests when the application processes .bsl playlist files containing excessively long hostnames, creating a scenario where attacker-controlled input can overwrite adjacent memory locations on the stack. The flaw operates by failing to properly validate the length of hostname data before copying it into a fixed-size buffer, allowing for potential exploitation through carefully crafted malicious playlist files.
The technical implementation of this vulnerability aligns with CWE-121, which categorizes stack-based buffer overflow conditions where insufficient bounds checking permits data to overwrite adjacent stack memory locations. When BS.Player encounters a .bsl file with an oversized hostname field, the application's parsing routine copies this data without adequate length verification, leading to stack corruption that can result in unpredictable program behavior. The attack vector requires remote delivery of a malicious .bsl playlist file, making it particularly dangerous in scenarios where users might encounter such files through email attachments, web downloads, or network shares. The vulnerability's exploitation potential extends beyond simple denial of service to include arbitrary code execution, as stack corruption can be manipulated to redirect program execution flow to attacker-controlled code.
The operational impact of CVE-2009-1068 presents significant risks to end-user security and system integrity across various deployment scenarios. Organizations and individual users running affected BS.Player versions face potential compromise through social engineering attacks targeting playlist file distribution, as these files can be disguised as legitimate media playlists. The vulnerability's remote exploitability means that attackers can potentially execute malicious code on victim systems without requiring local access, making it particularly concerning for enterprise environments where users may inadvertently download compromised media content. Additionally, the denial of service aspect creates opportunities for persistent disruption of media playback services and user productivity, while the arbitrary code execution capability could enable full system compromise through privilege escalation or malware installation.
Mitigation strategies for CVE-2009-1068 should prioritize immediate software updates to versions that address the buffer overflow condition, as the vendor has released patches to resolve this vulnerability. System administrators should implement strict file validation policies for playlist files, particularly those originating from untrusted sources, and consider deploying network-based intrusion detection systems that can identify suspicious .bsl file patterns. The implementation of application whitelisting solutions can help prevent execution of vulnerable BS.Player versions while updates are being deployed. Security awareness training should emphasize the dangers of downloading and executing playlist files from unknown sources, as this vulnerability can be effectively exploited through social engineering tactics. Additionally, network segmentation and firewall rules can be configured to restrict access to media content sources that might deliver malicious .bsl files, while regular security assessments should verify that all media player installations have been updated to patched versions. The vulnerability's classification under ATT&CK technique T1203, which covers exploitation of remote services, underscores the importance of maintaining updated security patches and implementing defense-in-depth strategies to protect against similar remote code execution vulnerabilities in multimedia applications.