CVE-2011-1286 in Chrome
Summary
by MITRE
Google V8, as used in Google Chrome before 10.0.648.127, allows remote attackers to cause a denial of service or possibly have unspecified other impact via unknown vectors that trigger incorrect access to memory.
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Analysis
by VulDB Data Team • 10/19/2021
The vulnerability identified as CVE-2011-1286 affects Google V8 JavaScript engine, which serves as the core execution engine for Google Chrome browser versions prior to 10.0.648.127. This flaw represents a critical security issue that demonstrates the inherent risks associated with complex JavaScript engine implementations. The vulnerability stems from improper memory access handling within the V8 engine, which is responsible for executing JavaScript code in web browsers. Such memory management issues in high-performance engines like V8 pose significant risks because they can be exploited to compromise the entire browser environment. The vulnerability's classification as a memory access issue aligns with common security weaknesses documented in CWE-125, which describes out-of-bounds read conditions that can lead to unpredictable behavior and potential exploitation. The V8 engine's architecture processes JavaScript code through multiple stages including parsing, compilation, and execution, making it a prime target for attackers seeking to exploit memory handling flaws.
The technical nature of this vulnerability involves incorrect memory access patterns that can be triggered through malicious JavaScript code delivered via web pages. Attackers can craft specific JavaScript payloads that manipulate the V8 engine's memory management routines, potentially causing buffer overflows, use-after-free conditions, or other memory corruption scenarios. These memory access issues can manifest in various ways including application crashes, memory leaks, or in more severe cases, arbitrary code execution. The vulnerability's impact extends beyond simple denial of service as the unspecified other impacts suggest potential for more sophisticated attacks. The attack surface becomes particularly dangerous because web browsers execute untrusted JavaScript code from multiple sources, making it relatively easy for attackers to deliver malicious payloads through compromised websites or social engineering techniques. The vulnerability demonstrates how JavaScript engines, despite their performance optimizations, can contain fundamental memory safety issues that compromise overall system security.
From an operational perspective, this vulnerability affects users of older Chrome versions who are exposed to potential exploitation through standard web browsing activities. The risk is particularly elevated in environments where users frequently visit untrusted websites or where social engineering attacks are prevalent. Organizations relying on Chrome for web-based applications face significant exposure since the vulnerability can be exploited through web-based attacks without requiring any local privileges or user interaction beyond normal browsing. The exploitation of such vulnerabilities often requires minimal technical expertise from attackers, making them particularly dangerous in enterprise environments. The vulnerability's impact on browser security can be compounded by the fact that V8 is used across multiple Google products and potentially integrated into other systems, creating broader attack surfaces. Security professionals must consider this vulnerability as part of comprehensive browser security strategies, recognizing that memory safety issues in JavaScript engines can have cascading effects on overall system integrity.
Mitigation strategies for CVE-2011-1286 primarily focus on immediate software updates and browser version management. Organizations should prioritize updating to Chrome version 10.0.648.127 or later, which contains patches addressing the memory access issues. Browser vendors and security teams should implement automated update mechanisms to ensure rapid deployment of security patches. Additional protective measures include implementing content security policies, using sandboxing technologies, and deploying web application firewalls to detect and block malicious JavaScript payloads. Security monitoring should focus on identifying unusual browser behavior patterns that might indicate exploitation attempts. The vulnerability highlights the importance of keeping browser software up to date, as these types of memory access flaws are typically addressed through regular security updates. Network administrators should also consider implementing browser hardening practices, such as disabling unnecessary JavaScript features and restricting access to potentially dangerous APIs. The incident underscores the need for continuous security assessment of browser components and the importance of maintaining comprehensive vulnerability management programs that account for the complex interdependencies between browser engines and web applications.