CVE-2018-12825 in Flash Player
Summary
by MITRE
Adobe Flash Player 30.0.0.134 and earlier have a security bypass vulnerability. Successful exploitation could lead to security mitigation bypass.
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Analysis
by VulDB Data Team • 05/06/2023
Adobe Flash Player contains a security bypass vulnerability in versions 30.0.0.134 and earlier that allows attackers to circumvent critical security protections designed to prevent unauthorized access to system resources. This vulnerability resides within the player's handling of certain memory operations and validation checks that are essential for maintaining the integrity of the execution environment. The flaw enables malicious actors to bypass security mechanisms that would normally prevent arbitrary code execution or unauthorized data access within the Flash runtime environment.
The technical implementation of this vulnerability stems from inadequate input validation and memory management practices within Flash Player's core components. When processing certain malformed or crafted content, the player fails to properly enforce security boundaries that separate trusted and untrusted execution contexts. This allows attackers to manipulate memory structures and execution flow in ways that were not anticipated by the original security design. The vulnerability specifically affects how the player handles memory allocation and deallocation processes, creating opportunities for attackers to exploit memory corruption patterns that lead to bypass of security mitigations.
The operational impact of this vulnerability extends beyond simple privilege escalation as it represents a fundamental breakdown in the security model of the Flash Player runtime. Attackers can leverage this bypass to circumvent controls that protect against code injection attacks, sandbox isolation, and other critical security features. The vulnerability enables threat actors to execute malicious code with elevated privileges or access sensitive system resources that should be protected from Flash content execution. This security bypass can be particularly dangerous when combined with other exploitation techniques, as it removes key defensive layers that would normally prevent successful compromise.
Organizations should prioritize immediate remediation by updating to Adobe Flash Player version 30.0.0.140 or later, which contains patches addressing this specific security bypass vulnerability. System administrators should also implement network-level controls to restrict Flash content execution where possible, particularly in environments where users may encounter untrusted content. Additional mitigations include disabling Flash Player entirely on systems where it is not required, implementing strict content filtering policies, and monitoring for unusual Flash-related network activity or system behavior that may indicate exploitation attempts. This vulnerability aligns with CWE-119 which describes weaknesses in memory management and improper access to memory locations, and represents a significant concern under the ATT&CK framework as it enables techniques such as privilege escalation and code injection through bypass of security controls.
The broader implications of this vulnerability highlight the ongoing challenges in maintaining secure multimedia execution environments, particularly in legacy systems where security updates may not be consistently applied. Organizations should consider transitioning away from Flash-based content entirely, as Adobe officially ended support for Flash Player in 2020, leaving systems vulnerable to unpatched security flaws. Regular security assessments and vulnerability scanning should include checks for outdated Flash Player installations, as this type of security bypass vulnerability can serve as a gateway for more sophisticated attacks targeting system integrity and data confidentiality.