CVE-2016-5146 in Chrome
Summary
by MITRE
Multiple unspecified vulnerabilities in Google Chrome before 52.0.2743.116 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 • 09/12/2022
The vulnerability identified as CVE-2016-5146 represents a critical security flaw in Google Chrome browser versions prior to 52.0.2743.116, affecting a broad range of unspecified attack vectors that could lead to denial of service conditions or potentially more severe consequences. This vulnerability falls under the category of unspecified flaws, indicating that the specific technical details were not fully disclosed at the time of the initial report, which is common in zero-day vulnerability disclosures where researchers may be working to understand the complete scope before public release.
The technical nature of this vulnerability stems from memory corruption issues that occur within Chrome's rendering engine and JavaScript execution environment. These types of flaws typically arise from improper handling of memory allocation, deallocation, or access patterns that can be exploited through malicious web content. The unspecified nature suggests that multiple attack surfaces within Chrome's architecture were compromised, potentially including the V8 JavaScript engine, Blink rendering engine, or various browser components that handle web content processing. Such vulnerabilities often manifest as heap-based buffer overflows, use-after-free conditions, or other memory management errors that can be triggered by crafted web pages containing malicious JavaScript or HTML elements.
The operational impact of CVE-2016-5146 extends beyond simple denial of service scenarios, as indicated by the potential for "other impact" in the vulnerability description. Attackers could potentially leverage this vulnerability to execute arbitrary code on affected systems, escalate privileges, or gain unauthorized access to sensitive information. The browser environment provides a rich attack surface since it processes untrusted web content from multiple sources, making it an attractive target for cybercriminals seeking to compromise user systems. These vulnerabilities are particularly dangerous because they can be exploited through standard web browsing activities, requiring no special user interaction beyond visiting a malicious website.
From a cybersecurity perspective, this vulnerability aligns with several common attack patterns documented in the MITRE ATT&CK framework, particularly those related to privilege escalation and remote code execution through browser-based exploits. The vulnerability type corresponds to CWE-119, which covers "Improper Restriction of Operations within the Bounds of a Memory Buffer," indicating that memory safety issues were at the core of the flaw. Organizations affected by this vulnerability faced significant risk as Chrome was widely used across enterprise environments, making the potential for widespread compromise substantial. The attack vector typically involved visiting malicious websites that contained specially crafted content designed to trigger the memory corruption vulnerabilities within Chrome's components.
Mitigation strategies for CVE-2016-5146 required immediate patching of Chrome browsers to version 52.0.2743.116 or later, which included various memory safety improvements and code hardening measures. System administrators needed to implement comprehensive browser update policies and consider additional security measures such as sandboxing configurations, content filtering solutions, and network-based protections to reduce the attack surface. The vulnerability highlighted the importance of maintaining up-to-date browser software and implementing layered security approaches. Organizations should have also considered browser isolation techniques and user education regarding safe browsing practices to minimize exposure to similar vulnerabilities. Regular security assessments and penetration testing were recommended to identify potential exploitation paths and ensure that all browser-related components remained secure against evolving threats.