CVE-2010-1445 in VLC Media Player
Summary
by MITRE
Heap-based buffer overflow in VideoLAN VLC media player before 1.0.6 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted byte stream in an RTMP session.
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Analysis
by VulDB Data Team • 04/10/2022
The vulnerability identified as CVE-2010-1445 represents a critical heap-based buffer overflow flaw within the VideoLAN VLC media player version 1.0.5 and earlier. This vulnerability specifically affects the handling of Real-Time Messaging Protocol (RTMP) streams, which are commonly used for streaming audio and video content over internet connections. The flaw exists in the media player's parsing mechanism for RTMP byte streams, creating a condition where maliciously crafted data can trigger memory corruption. The vulnerability is classified under CWE-121 as a heap-based buffer overflow, which occurs when more data is written to a buffer allocated on the heap than the buffer can accommodate, leading to memory overwrite conditions.
The technical exploitation of this vulnerability occurs when VLC processes an RTMP session containing malformed byte sequences that exceed the allocated buffer boundaries. When the media player attempts to parse these crafted streams, the overflow can overwrite adjacent memory locations, potentially corrupting the program's execution flow. This memory corruption can manifest in two primary ways: either causing the application to crash through a segmentation fault or potentially allowing remote code execution if the attacker can control the overwritten memory locations to redirect program execution. The vulnerability's remote nature means that attackers can exploit it without requiring local access to the target system, making it particularly dangerous in networked environments where media players are commonly used.
The operational impact of this vulnerability extends beyond simple denial of service scenarios to potentially enable remote code execution, which represents a significant security risk for users who may unknowingly access malicious RTMP streams. The vulnerability affects a widely deployed media player with millions of users globally, making the potential attack surface substantial. When exploited, the vulnerability can lead to complete system compromise if successful, as attackers could potentially execute malicious code with the privileges of the user running VLC. This makes the vulnerability particularly concerning for enterprise environments where media players are frequently used for multimedia presentations, training materials, and collaborative work sessions. The RTMP protocol's widespread use in streaming applications means that this vulnerability could be exploited across various legitimate streaming services that utilize the protocol, increasing the attack surface and potential impact.
Mitigation strategies for CVE-2010-1445 primarily focus on immediate remediation through software updates, with the most effective solution being the upgrade to VLC media player version 1.0.6 or later, which contains the necessary patches to address the heap overflow vulnerability. System administrators should implement network monitoring to detect and block suspicious RTMP traffic patterns that might indicate exploitation attempts, utilizing intrusion detection systems and firewalls to filter potentially malicious streams. Additionally, users should be educated about the risks of accessing untrusted media content and should avoid opening media files from unknown or unverified sources. The vulnerability's classification under ATT&CK technique T1203 (Exploitation for Client Execution) highlights the need for endpoint protection measures including application whitelisting and privilege separation. Organizations should also consider implementing sandboxing mechanisms for media playback applications to limit the potential impact if exploitation occurs, and maintain regular vulnerability assessment programs to identify and remediate similar issues in other media handling components.