CVE-2009-1866 in Flash Player
Summary
by MITRE
Stack-based buffer overflow in Adobe Flash Player before 9.0.246.0 and 10.x before 10.0.32.18, and Adobe AIR before 1.5.2, allows attackers to cause a denial of service (application crash) or possibly execute arbitrary code via unspecified vectors.
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Analysis
by VulDB Data Team • 08/13/2021
The vulnerability identified as CVE-2009-1866 represents a critical stack-based buffer overflow flaw affecting Adobe Flash Player and Adobe AIR platforms. This security weakness exists in versions prior to 9.0.246.0 for Flash Player and 10.x versions before 10.0.32.18, alongside Adobe AIR versions before 1.5.2. The flaw manifests as a fundamental memory corruption issue that can be exploited by malicious actors to compromise system integrity. The vulnerability operates through unspecified attack vectors that leverage the inherent design flaw in how the affected software manages stack memory allocation during runtime operations.
The technical nature of this buffer overflow stems from improper bounds checking within the Flash Player and AIR runtime environments. When processing specially crafted content, the vulnerable applications fail to validate input lengths against allocated stack buffer sizes, creating opportunities for attackers to overwrite adjacent memory locations. This memory corruption can result in unpredictable program behavior, application crashes, or more severely, allow remote code execution. The stack-based nature of the vulnerability means that the overflow occurs in the program's stack memory space, potentially corrupting return addresses, function parameters, and other critical execution data.
From an operational perspective, this vulnerability presents significant risks to organizations relying on Flash-based content delivery. The potential for arbitrary code execution makes it particularly dangerous as attackers could gain complete control over affected systems, potentially leading to data breaches, system compromise, or deployment of additional malicious payloads. The denial of service aspect further compounds the threat by enabling attackers to disrupt legitimate service operations. According to CWE classification, this vulnerability maps to CWE-121 Stack-based Buffer Overflow, which is a well-documented weakness in software security that has historically led to numerous successful exploitation attempts.
The impact of this vulnerability extends beyond individual system compromise to encompass broader enterprise security concerns. Organizations with extensive Flash content usage face substantial risk exposure, particularly those with legacy systems that may not receive timely updates. Attackers can leverage this flaw through various delivery mechanisms including malicious websites, email attachments, or compromised web applications that embed Flash content. The ATT&CK framework categorizes such vulnerabilities under the TTPs related to code injection and privilege escalation, as the successful exploitation can enable attackers to execute malicious code with the privileges of the affected application.
Mitigation strategies for CVE-2009-1866 primarily focus on immediate remediation through software updates. Adobe released patches addressing this vulnerability in the specified version ranges, making it imperative for organizations to deploy these updates promptly. System administrators should implement comprehensive patch management processes to ensure all affected installations receive timely updates. Additional protective measures include network segmentation to limit exposure, implementing web application firewalls, and employing runtime monitoring solutions that can detect anomalous behavior indicative of exploitation attempts. Security teams should also consider disabling Flash content in web browsers where possible, as this reduces the attack surface for exploitation. Regular security assessments and vulnerability scanning should be conducted to identify any remaining instances of vulnerable software within the organization's infrastructure.