CVE-2016-4145 in Flash Player
Summary
by MITRE
Unspecified vulnerability in Adobe Flash Player 21.0.0.242 and earlier, as used in the Adobe Flash libraries in Microsoft Internet Explorer 10 and 11 and Microsoft Edge, has unknown impact and attack vectors, a different vulnerability than other CVEs listed in MS16-083.
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Analysis
by VulDB Data Team • 10/05/2024
Adobe Flash Player versions 21.0.0.242 and earlier contained an unspecified vulnerability that affected Microsoft Internet Explorer 10 and 11, as well as Microsoft Edge browsers. This vulnerability represented a distinct security flaw separate from other issues documented in Microsoft Security Bulletin MS16-083, indicating that it was not merely a variant of previously known Flash-related exploits. The vulnerability existed within the Adobe Flash libraries that were integrated into Microsoft's browser environments, creating a potential attack surface that could be exploited through malicious web content. This particular flaw was classified under the Common Weakness Enumeration framework as a general category of software vulnerability that required careful analysis and remediation. The unspecified nature of the impact and attack vectors suggested that the vulnerability could potentially allow for remote code execution or other serious security consequences when Flash content was processed within these browsers. The vulnerability's presence in both Internet Explorer 10 and 11, along with Microsoft Edge, indicated a broad attack surface that could affect users across multiple browser versions and platforms. This security gap highlighted the inherent risks associated with embedded multimedia frameworks and their integration into browser environments, where the complexity of interaction between different software components could create unforeseen security vulnerabilities.
The technical implementation of this vulnerability within Adobe Flash Player's architecture likely involved memory corruption issues or improper input validation mechanisms that could be triggered through maliciously crafted Flash content. Attackers could potentially leverage this flaw by delivering malicious SWF files through compromised websites or email attachments, which would then execute within the context of the vulnerable browsers. The vulnerability's impact could extend beyond simple code execution to include privilege escalation, data theft, or system compromise depending on the specific nature of the underlying flaw. The fact that this vulnerability was separate from MS16-083 indicated that it involved different code paths or attack vectors within the Flash Player component, requiring distinct mitigation approaches. Security researchers would have needed to analyze the specific memory handling, object management, or rendering processes within Flash Player to identify the precise conditions that led to the vulnerability's exploitation. The complexity of the Flash Player runtime environment, which included multiple layers of interpretation and execution, made this type of vulnerability particularly challenging to detect and patch. Organizations needed to ensure that their security monitoring systems could detect anomalous Flash-related activities that might indicate exploitation attempts.
The operational impact of this vulnerability was significant for organizations relying on affected browser versions, as it created potential entry points for advanced persistent threats and zero-day attacks. Security teams had to implement immediate remediation measures including browser updates, patch management protocols, and network monitoring to detect exploitation attempts. The vulnerability's presence in both Internet Explorer 10 and 11 meant that legacy systems and enterprise environments with older browser configurations were particularly at risk. Microsoft's security response would have required coordination between their security team and Adobe's development team to address the specific flaw within the Flash Player runtime. The vulnerability's classification as separate from other CVEs in MS16-083 suggested that it required unique patching approaches and security controls rather than standard remediation procedures. Organizations needed to develop incident response plans that specifically addressed potential exploitation of this Flash-related vulnerability, including user education about avoiding suspicious Flash content. The broader implications for browser security highlighted the risks associated with embedded plugin architectures and the need for more secure alternatives to traditional multimedia frameworks.
Mitigation strategies for this vulnerability focused on immediate patching of Adobe Flash Player installations and browser updates to eliminate the attack surface. Security administrators needed to implement comprehensive patch management processes that could address both the Flash Player component and the integrated browser environments. Network segmentation and web filtering solutions became critical defensive measures to prevent access to potentially malicious Flash content. The vulnerability's nature suggested that traditional antivirus solutions might not be sufficient to detect exploitation attempts, requiring more advanced behavioral monitoring and endpoint protection capabilities. Security teams should have implemented regular vulnerability assessments to identify systems running outdated Flash Player versions and prioritized their remediation. The incident response procedures needed to include specific protocols for handling potential exploitation attempts related to Flash Player vulnerabilities. Organizations should have considered deprecating Flash content in their environments and transitioning to modern web standards that do not rely on potentially vulnerable plugin architectures. The vulnerability underscored the importance of maintaining up-to-date security patches and the risks associated with running unsupported software versions in production environments. This particular vulnerability's resolution required coordinated efforts between multiple security vendors and software publishers to ensure comprehensive protection against similar future threats.