CVE-2014-8438 in Flash Player
Summary
by MITRE
Use-after-free vulnerability in Adobe Flash Player before 13.0.0.252 and 14.x and 15.x before 15.0.0.223 on Windows and OS X and before 11.2.202.418 on Linux, Adobe AIR before 15.0.0.356, Adobe AIR SDK before 15.0.0.356, and Adobe AIR SDK & Compiler before 15.0.0.356 allows attackers to execute arbitrary code via unspecified vectors, a different vulnerability than CVE-2014-0573 and CVE-2014-0588.
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Analysis
by VulDB Data Team • 02/24/2022
The CVE-2014-8438 vulnerability represents a critical use-after-free flaw in Adobe Flash Player and Adobe AIR platforms that persisted across multiple versions and operating systems. This vulnerability specifically affects Flash Player versions prior to 13.0.0.252 and 14.x and 15.x before 15.0.0.223 on Windows and OS X platforms, while also impacting Adobe AIR versions before 15.0.0.356 and corresponding SDK versions on Linux systems. The flaw operates through unspecified attack vectors that differ from other contemporaneous vulnerabilities such as CVE-2014-0573 and CVE-2014-0588, indicating a distinct exploitation pathway within the Flash runtime environment.
The technical nature of this vulnerability stems from improper memory management within the Flash Player runtime, where freed memory blocks are still referenced or accessed by subsequent operations. This use-after-free condition creates a memory corruption scenario that attackers can leverage to execute arbitrary code with the privileges of the Flash Player process. The vulnerability manifests when the application fails to properly validate memory references after objects have been destroyed, allowing malicious code to overwrite or manipulate freed memory regions. This particular flaw falls under the CWE-416 category of Use After Free conditions, which is classified as a common weakness in software security implementations. The vulnerability's exploitation requires careful crafting of malicious Flash content that triggers the specific memory management flaw, typically involving complex object manipulation and memory layout control.
The operational impact of CVE-2014-8438 extends beyond simple code execution, as it provides attackers with a sophisticated method for privilege escalation and system compromise. When successfully exploited, the vulnerability enables attackers to gain arbitrary code execution capabilities that can lead to complete system compromise, data exfiltration, or persistent backdoor installation. The widespread adoption of Flash Player across various platforms and applications made this vulnerability particularly dangerous, as it could be exploited through web browsers, email attachments, or other vectors where Flash content was rendered. The vulnerability's persistence across multiple versions and operating systems demonstrates the complexity of the underlying memory management issues within Adobe's runtime environment. From an ATT&CK framework perspective, this vulnerability maps to techniques involving code injection and privilege escalation, with potential for lateral movement through compromised systems. The vulnerability's exploitation often requires social engineering components to deliver malicious Flash content, making it a significant threat vector in targeted attacks.
Mitigation strategies for CVE-2014-8438 focus primarily on immediate patching and remediation efforts across all affected platforms and versions. Organizations should prioritize updating Adobe Flash Player to versions 13.0.0.252 and 14.x and 15.x before 15.0.0.223 on Windows and OS X, while also upgrading Adobe AIR to version 15.0.0.356 or later on all supported platforms. Additionally, implementing network-based protections such as content filtering, sandboxing mechanisms, and browser security policies can help reduce the attack surface. Security professionals should also consider disabling Flash Player entirely in environments where it is not essential for business operations, particularly given the vulnerability's potential for remote code execution. The remediation process must include comprehensive testing of patched systems to ensure that the vulnerability has been properly addressed without introducing compatibility issues with legitimate Flash applications. Regular vulnerability assessments and security monitoring should be implemented to detect any potential exploitation attempts or related vulnerabilities that may have emerged from similar memory management flaws in the Flash runtime environment.