CVE-2016-2843 in Chrome
Summary
by MITRE
Multiple unspecified vulnerabilities in Google V8 before 4.9.385.26, as used in Google Chrome before 49.0.2623.75, allow attackers to cause a denial of service or possibly have other impact via unknown vectors.
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Analysis
by VulDB Data Team • 07/09/2022
The vulnerability identified as CVE-2016-2843 represents a critical security flaw affecting Google V8 JavaScript engine version 4.9.385.26 and earlier, which was integrated into Google Chrome browser versions prior to 49.0.26. This issue falls under the category of unspecified vulnerabilities within the V8 engine, indicating that attackers could exploit multiple unknown vectors to compromise system integrity and availability. The V8 engine serves as the core JavaScript execution engine for Chrome and other Google products, making this vulnerability particularly dangerous as it could affect a broad range of applications and services that rely on JavaScript processing capabilities.
The technical nature of this vulnerability stems from the inherent complexity of modern JavaScript engines that must balance performance optimization with security hardening. V8 employs sophisticated just-in-time compilation techniques and memory management strategies that introduce potential attack surfaces where improper handling of certain JavaScript constructs could lead to memory corruption or unexpected behavior. These unspecified vectors likely involve edge cases in the engine's interpretation of JavaScript code, potentially including malformed input, specific code patterns, or interactions between different JavaScript features that could trigger memory safety issues. The vulnerability's classification as potentially enabling both denial of service and other impacts suggests that exploitation could manifest through various attack vectors including heap corruption, stack overflow conditions, or other memory management failures that could be leveraged for more sophisticated attacks.
From an operational impact perspective, this vulnerability presents significant risk to organizations relying on Chrome-based applications and services. The potential for denial of service attacks means that malicious actors could disrupt service availability by causing browser crashes or system instability, while the possibility of additional impacts suggests that more severe consequences such as privilege escalation or remote code execution cannot be ruled out. The widespread adoption of Chrome as a primary browser across enterprise and consumer environments amplifies the potential damage, as exploitation could affect millions of users and systems. Organizations using Chrome-based applications for critical business processes face particular risk, as these vulnerabilities could be leveraged to disrupt operations or gain unauthorized access to sensitive systems.
Mitigation strategies for CVE-2016-2843 primarily focus on immediate remediation through software updates and patch management processes. Organizations should prioritize updating to Chrome version 49.0.26 or later, which contains the necessary fixes for the V8 engine vulnerabilities. Additionally, implementing browser hardening techniques such as sandboxing, content security policies, and restricted JavaScript execution environments can provide additional defense layers. Network-level protections including web application firewalls and intrusion detection systems can help identify and block exploitation attempts. The vulnerability also highlights the importance of keeping all browser components updated, as the V8 engine is frequently updated to address newly discovered security issues. Security teams should also consider implementing monitoring solutions to detect unusual browser behavior or potential exploitation attempts. According to CWE classification, this vulnerability would likely fall under CWE-119 for memory safety issues and CWE-400 for resource exhaustion, while ATT&CK framework considerations would include techniques related to privilege escalation and remote code execution through browser exploits. Regular vulnerability assessments and penetration testing should be conducted to identify potential exploitation vectors and ensure proper patch management processes are in place to prevent similar vulnerabilities from being exploited in the future.