CVE-2016-4124 in Flash Player
Summary
by MITRE • 01/26/2023
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 • 01/26/2023
Adobe Flash Player versions 21.0.0.242 and earlier contain an unspecified vulnerability that affects Microsoft Internet Explorer 10 and 11, as well as Microsoft Edge browsers. This vulnerability exists within the Adobe Flash libraries that are integrated into these browser environments, creating a potential attack surface that differs from other vulnerabilities referenced in Microsoft Security Bulletin MS16-083. The unspecified nature of the vulnerability means that specific technical details regarding the exact flaw remain undisclosed, though it represents a significant security risk within the browser ecosystem. The vulnerability's impact and attack vectors are classified as unknown, which typically indicates that security researchers have not yet fully characterized the exploitability or potential consequences of this particular flaw. This classification suggests that the vulnerability may involve complex exploitation techniques or could potentially affect multiple system components. The fact that it exists in Flash Player libraries integrated into major Microsoft browsers creates a substantial risk for users who rely on these platforms, as the vulnerability could potentially allow for arbitrary code execution or other malicious activities. The distinction from other CVEs in MS16-083 indicates that this represents a unique attack vector or exploitation method compared to previously identified vulnerabilities. This type of vulnerability often requires careful analysis and monitoring as security researchers work to understand the full scope of potential impacts. The vulnerability's presence in widely used browser environments means that it could potentially affect a large user base, particularly given the extensive use of Internet Explorer 10 and 11 in enterprise and legacy systems.
The technical nature of this vulnerability within Adobe Flash Player suggests it likely involves memory corruption or execution flow manipulation within the Flash runtime environment. Flash Player's complex architecture and extensive use of ActionScript and native code create numerous potential entry points for exploitation. The vulnerability's presence in both Internet Explorer 10 and 11 browsers indicates it may leverage browser-specific integration points or security model weaknesses within these platforms. Microsoft Edge's inclusion suggests the vulnerability affects modern browser security models as well, indicating potential issues with how Flash content interacts with contemporary browser sandboxing mechanisms. This could involve issues with memory management, object handling, or interaction between Flash's execution environment and browser security boundaries. The unspecified nature of the vulnerability often indicates either that it has not been fully analyzed by the security community or that its exploitation requires specific conditions that make it difficult to categorize. The vulnerability's classification as different from MS16-083 suggests it operates through distinct mechanisms, potentially involving different memory corruption patterns or attack vectors than previously identified issues.
The operational impact of this vulnerability extends beyond simple browser security concerns, as it affects the fundamental security model of major Microsoft browsers. Users of Internet Explorer 10 and 11 who have not updated to patched versions remain at risk of exploitation through malicious Flash content, potentially leading to complete system compromise. The vulnerability's presence in Microsoft Edge indicates that even newer browser security models may not be fully protected against this specific flaw. Organizations running legacy systems with Internet Explorer 10 and 11 are particularly vulnerable, as these browsers continue to be used in enterprise environments despite their age. The unknown attack vectors suggest that this vulnerability could potentially be exploited through various means including web-based attacks, malicious websites, or potentially through social engineering combined with Flash content. This uncertainty in attack vectors makes the vulnerability particularly dangerous as defenders cannot easily predict or prepare for all potential exploitation methods. The vulnerability's impact on browser security models could potentially enable attackers to bypass security controls or escalate privileges within the browser environment, making it a critical concern for system administrators and security professionals.
Mitigation strategies for this vulnerability primarily focus on immediate remediation through software updates and patches. Users and organizations should prioritize updating Adobe Flash Player to versions that address this unspecified vulnerability, though the lack of specific details makes it difficult to determine exactly which patches resolve the issue. Browser vendors should ensure that their integration of Flash libraries is properly updated and that users are encouraged to disable or remove Flash content where possible. The vulnerability's presence in both legacy and modern browsers suggests that comprehensive patch management programs should address both Microsoft Edge and Internet Explorer versions. Security professionals should implement network monitoring to detect potential exploitation attempts through Flash-based attacks, particularly focusing on suspicious Flash content delivery. Organizations should consider disabling Flash content entirely in browser environments where it is not required, as this eliminates the attack surface entirely. The unspecified nature of the vulnerability indicates that defensive measures should be comprehensive and include multiple layers of protection, as traditional security controls may not be sufficient. Additionally, organizations should implement regular security assessments to identify other potential vulnerabilities in their browser environments, as this type of unspecified vulnerability often indicates broader security issues within the platform. The vulnerability's classification as different from other CVEs in MS16-083 emphasizes the need for specific monitoring and patching strategies rather than relying on general security updates. Security teams should maintain awareness of any emerging information about this vulnerability as it becomes available through security research and vendor advisories.