CVE-2022-1096 in Chrome
Summary
by MITRE • 07/23/2022
Type confusion in V8 in Google Chrome prior to 99.0.4844.84 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
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Analysis
by VulDB Data Team • 05/01/2025
The vulnerability identified as CVE-2022-1096 represents a critical type confusion issue within the V8 JavaScript engine that powers Google Chrome. This flaw exists in the engine's handling of object types during runtime execution, creating a scenario where the system incorrectly interprets data types leading to unpredictable behavior. The vulnerability specifically affects Chrome versions prior to 99.0.4844.84, making it a significant concern for users operating older browser versions. Type confusion vulnerabilities are particularly dangerous because they can lead to arbitrary code execution when exploited by malicious actors.
The technical implementation of this vulnerability stems from improper type checking mechanisms within V8's memory management system. When processing crafted HTML content, the engine fails to properly validate type consistency between different object references, allowing attackers to manipulate memory structures through carefully constructed JavaScript code. This type confusion creates opportunities for heap corruption, where the attacker can overwrite critical memory locations with malicious data. The flaw operates at the intersection of JavaScript execution and low-level memory management, making it particularly challenging to detect and prevent through conventional security measures. According to CWE standards, this vulnerability maps to CWE-476 which specifically addresses NULL pointer dereferences and related type confusion issues in software implementations.
The operational impact of CVE-2022-1096 extends beyond simple browser exploitation to potentially enable full system compromise. Remote attackers can leverage this vulnerability through malicious web pages without requiring user interaction, making it a severe threat vector for phishing campaigns and drive-by attacks. The heap corruption resulting from type confusion can be exploited to overwrite function pointers, return addresses, or other critical program structures, potentially leading to privilege escalation or complete system takeover. This vulnerability aligns with ATT&CK technique T1059.007 for JavaScript execution and T1070.004 for bypassing security controls through memory corruption attacks. The exploitability of this vulnerability is enhanced by the fact that it requires no user interaction beyond visiting a malicious webpage, making it particularly dangerous in real-world scenarios.
Mitigation strategies for CVE-2022-1096 center around immediate browser updates to versions 99.0.4844.84 or later where the vulnerability has been patched. Organizations should implement comprehensive patch management processes to ensure all Chrome installations are updated promptly. Additional protective measures include deploying web application firewalls that can detect and block suspicious JavaScript patterns, implementing strict content security policies to limit script execution, and using sandboxing technologies to contain potential exploitation attempts. Network-level protections such as DNS filtering and web reputation services can provide additional layers of defense against exploitation attempts. Security teams should also monitor for indicators of compromise related to this vulnerability and consider implementing browser hardening configurations that disable unnecessary JavaScript features. The vulnerability demonstrates the importance of keeping browser engines updated, as V8 patches often include fixes for multiple memory corruption vulnerabilities that could be exploited in combination with other attack vectors.