CVE-2014-1730 in Chrome
Summary
by MITRE
Google V8, as used in Google Chrome before 34.0.1847.131 on Windows and OS X and before 34.0.1847.132 on Linux, does not properly store internationalization metadata, which allows remote attackers to bypass intended access restrictions by leveraging "type confusion" and reading property values, related to i18n.js and runtime.cc.
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Analysis
by VulDB Data Team • 05/12/2026
The vulnerability identified as CVE-2014-1730 represents a critical type confusion issue within Google V8 JavaScript engine, which serves as the core JavaScript runtime for Google Chrome browser. This flaw exists in the internationalization metadata handling mechanisms and affects Chrome versions prior to 34.0.1847.131 on Windows and OS X platforms, and before 34.0.1847.132 on Linux systems. The vulnerability stems from improper storage and management of internationalization metadata, creating a pathway for remote attackers to exploit the engine's type handling capabilities.
The technical exploitation of this vulnerability relies on type confusion principles that fall under CWE-468, where the JavaScript engine fails to properly distinguish between different data types during runtime operations. Attackers can leverage this weakness by crafting malicious JavaScript code that manipulates property values in ways that bypass intended access restrictions. The specific implementation details involve the interaction between i18n.js and runtime.cc components, where the engine's internationalization subsystem does not adequately validate or sanitize metadata associated with internationalized string operations. This allows attackers to manipulate object types and access restricted memory locations through carefully constructed payloads.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it enables remote code execution capabilities through browser-based attacks. An attacker could potentially execute arbitrary code on a victim's system by exploiting the type confusion to read property values that should remain restricted, thereby undermining the security boundaries established by Chrome's sandboxing mechanisms. The vulnerability particularly affects web applications that rely heavily on internationalization features, making it a significant concern for websites that handle user-provided content or dynamic internationalized data. This flaw essentially allows attackers to bypass the browser's security model by manipulating how internationalization metadata is stored and accessed.
Mitigation strategies for CVE-2014-1730 focus primarily on updating to patched versions of Google Chrome where the V8 engine properly handles internationalization metadata. System administrators should prioritize immediate deployment of Chrome versions 34.0.1847.131 or later for Windows and OS X platforms, and 34.0.1847.132 or later for Linux systems. Additionally, organizations should implement network-level protections such as web application firewalls that can detect and block suspicious JavaScript patterns associated with type confusion attacks. The vulnerability demonstrates the importance of proper input validation and type safety in JavaScript engines, aligning with ATT&CK technique T1059.007 for JavaScript-based execution. Organizations should also consider implementing content security policies and restricting the execution of potentially malicious JavaScript code in environments where the vulnerability may be exploited.