CVE-2014-8635 in Firefox
Summary
by MITRE
Multiple unspecified vulnerabilities in the browser engine in Mozilla Firefox before 35.0 and SeaMonkey before 2.32 allow remote attackers to cause a denial of service (memory corruption and application crash) or possibly execute arbitrary code via unknown vectors.
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Analysis
by VulDB Data Team • 03/02/2022
The vulnerability identified as CVE-2014-8635 represents a critical security flaw affecting the browser engine components of Mozilla Firefox versions prior to 35.0 and SeaMonkey versions prior to 2.32. This issue falls under the category of unspecified vulnerabilities within the rendering engine, which serves as the core component responsible for processing web content and executing JavaScript code. The affected systems are particularly susceptible due to the fundamental nature of browser engines in handling user input and web resources, making this vulnerability particularly dangerous as it could potentially be exploited to gain unauthorized access to systems or compromise user data.
The technical implementation of this vulnerability stems from memory corruption issues within the browser engine's processing mechanisms. These memory corruption flaws typically occur when the engine fails to properly validate or sanitize input data before processing it, leading to improper memory allocation or deallocation patterns. The vulnerability allows attackers to manipulate the browser's memory management systems through carefully crafted web content, potentially causing the application to crash or corrupt memory structures. According to CWE classification, this vulnerability maps to CWE-119: Improper Access to Memory Location, which specifically addresses weaknesses in memory handling that can lead to buffer overflows, use-after-free conditions, or other memory corruption scenarios.
The operational impact of CVE-2014-8635 extends beyond simple denial of service conditions to potentially enable remote code execution capabilities. When exploited, these vulnerabilities can cause browsers to crash unexpectedly, resulting in denial of service for legitimate users, or more critically, allow attackers to execute arbitrary code on affected systems. This dual nature of the vulnerability makes it particularly concerning for enterprise environments where browser-based attacks can serve as initial entry points for broader security breaches. The attack surface is extensive given that the vulnerability affects web browser engines, which are frequently targeted due to their widespread use and the potential for chaining with other exploits.
The attack vectors for this vulnerability are primarily web-based, requiring users to visit malicious websites or be tricked into interacting with compromised web content. Attackers can leverage this vulnerability through various techniques including drive-by downloads, malicious advertisements, or compromised websites that contain specially crafted content designed to trigger the memory corruption conditions. This aligns with ATT&CK framework techniques such as T1203: Exploitation for Client Execution, where adversaries exploit software vulnerabilities to execute malicious code on target systems. The vulnerability's potential for remote code execution places it in the high-risk category for organizations, as it can be exploited without user interaction once the malicious content is loaded.
Organizations should implement immediate mitigation strategies including prompt patching of affected systems to version 35.0 for Firefox and 2.32 for SeaMonkey, as these releases contain the necessary fixes for the identified memory corruption issues. Additionally, network security measures such as web application firewalls and content filtering systems can provide additional protection layers by blocking access to known malicious domains. Security monitoring should be enhanced to detect unusual browser behavior patterns that might indicate exploitation attempts. The vulnerability highlights the importance of maintaining up-to-date browser software and implementing comprehensive patch management procedures to protect against similar future vulnerabilities. Regular security assessments and vulnerability scanning should be conducted to identify any remaining exposure risks in the browser environment.