CVE-2011-2806 in Chrome
Summary
by MITRE
Google Chrome before 13.0.782.215 on Windows does not properly handle vertex data, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via unspecified vectors.
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Analysis
by VulDB Data Team • 03/19/2021
The vulnerability identified as CVE-2011-2806 represents a critical memory corruption flaw within Google Chrome versions prior to 13.0.782.215 on Windows operating systems. This vulnerability resides in the browser's handling of vertex data structures, which are fundamental components used in graphics rendering and web page visualization. The flaw enables remote attackers to manipulate memory operations through unspecified vectors, potentially leading to arbitrary code execution or denial of service conditions. The issue specifically affects the graphics processing capabilities of Chrome's rendering engine, where improper vertex data handling creates exploitable memory corruption conditions.
The technical implementation of this vulnerability stems from inadequate validation and processing of vertex data within Chrome's graphics subsystem. Vertex data represents the basic geometric components used to construct 3D objects and visual elements on web pages, particularly when utilizing technologies like WebGL or HTML5 canvas. When Chrome processes malformed or malicious vertex data, the browser fails to properly validate input parameters, leading to buffer overflows or memory corruption that can be leveraged by attackers. This type of vulnerability falls under the CWE-125 vulnerability category, which encompasses out-of-bounds read errors that can result in memory corruption and potential code execution. The flaw demonstrates characteristics consistent with heap-based buffer overflow conditions that are commonly exploited in browser-based attacks.
From an operational perspective, this vulnerability presents significant risks to users of affected Chrome versions, as it can be exploited through web-based attacks without requiring user interaction beyond visiting a malicious webpage. Attackers can craft specially designed web content that triggers the memory corruption when Chrome attempts to render vertex data, potentially allowing them to execute arbitrary code with the privileges of the browser process. The attack surface extends across various web applications that utilize graphics rendering capabilities, making it particularly dangerous in environments where users frequently visit untrusted websites. The vulnerability's exploitation can result in complete system compromise, as successful exploitation typically allows attackers to bypass security restrictions and gain unauthorized access to system resources. According to ATT&CK framework categorization, this vulnerability maps to techniques involving code injection and privilege escalation, specifically targeting the browser's rendering engine as a vector for system compromise.
The recommended mitigation strategy involves immediate deployment of Chrome version 13.0.782.215 or later, which includes patches addressing the vertex data handling flaw. Organizations should implement comprehensive patch management procedures to ensure all affected systems receive updates promptly. Additionally, browser hardening measures such as enabling sandboxing features, restricting browser privileges, and implementing content security policies can provide additional defense layers. Security monitoring should focus on detecting unusual browser behavior or memory access patterns that might indicate exploitation attempts. Network-level protections including web application firewalls and intrusion detection systems can help identify and block malicious web content targeting this vulnerability. System administrators should also consider implementing user education programs to reduce exposure to malicious websites that might exploit this flaw, while maintaining regular security assessments to verify the effectiveness of implemented controls.