CVE-2001-0127 in Flash
Summary
by MITRE
Buffer overflow in Olivier Debon Flash plugin (not the Macromedia plugin) allows remote attackers to cause a denial of service and possibly execute arbitrary code via a long DefineSound tag.
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Analysis
by VulDB Data Team • 06/09/2024
The vulnerability identified as CVE-2001-0127 targets a specific implementation of the flash plugin developed by Olivier Debon rather than the widely known Macromedia Flash plugin. This buffer overflow flaw exists within the handling of DefineSound tags in the plugin's processing logic, representing a classic software security weakness that can be exploited remotely. The vulnerability operates at the intersection of multimedia processing and memory management, where improper bounds checking allows malicious input to overwrite adjacent memory locations.
The technical flaw manifests when the plugin encounters a specially crafted DefineSound tag containing excessive data length. This particular tag structure within the flash file format is designed to define sound samples for playback, but the Olivier Debon plugin fails to properly validate the length of data associated with these tags. When a maliciously constructed flash file is processed, the buffer overflow occurs during the parsing phase, potentially leading to stack corruption or heap manipulation. This type of vulnerability falls under CWE-121, which specifically addresses stack-based buffer overflow conditions, and represents a fundamental weakness in input validation and memory management practices.
The operational impact of this vulnerability extends beyond simple denial of service to potentially enable arbitrary code execution on vulnerable systems. Remote attackers can craft malicious flash content that, when viewed by an unsuspecting user, triggers the buffer overflow condition. The exploitability of this vulnerability is enhanced by the widespread use of flash content in web browsers during the early 2000s, making it a significant threat vector for widespread compromise. Attackers could leverage this weakness to execute malicious code with the privileges of the affected user, potentially leading to complete system compromise or data exfiltration. The vulnerability's remote exploitability aligns with ATT&CK technique T1203, which covers exploitation of remote services through software vulnerabilities.
Mitigation strategies for CVE-2001-0127 primarily involve immediate patching of the affected plugin version, as well as implementing network-level controls to restrict access to potentially malicious flash content. System administrators should consider disabling flash plugin execution entirely in web browsers where possible, particularly for users who do not require flash functionality. Additionally, network segmentation and content filtering solutions can help prevent the delivery of malicious flash content to end users. The vulnerability highlights the importance of proper input validation and memory safety practices in multimedia processing components, as well as the critical need for regular security updates and vulnerability assessments of third-party plugins. Organizations should also consider implementing application whitelisting policies to prevent execution of untrusted flash content and establish robust monitoring for unusual network traffic patterns that might indicate exploitation attempts.