CVE-2022-2294 in Safari
Summary
by MITRE • 07/28/2022
Heap buffer overflow in WebRTC in Google Chrome prior to 103.0.5060.114 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page.
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Analysis
by VulDB Data Team • 05/25/2026
The vulnerability identified as CVE-2022-2294 represents a critical heap buffer overflow flaw within the WebRTC implementation of Google Chrome browser versions prior to 103.0.5060.114. This issue resides in the browser's handling of WebRTC (Web Real-Time Communication) functionality which enables real-time audio and video communication directly within web browsers without requiring additional plugins or software installations. The vulnerability stems from improper bounds checking during memory allocation and manipulation processes within the WebRTC component, creating an exploitable condition where maliciously crafted HTML content can trigger unauthorized memory access patterns.
The technical exploitation of this heap buffer overflow occurs when a remote attacker crafts a specially designed HTML page that leverages WebRTC APIs in a manner that causes the browser to allocate insufficient memory for data structures. When the WebRTC implementation processes this malformed input, it fails to properly validate input boundaries, allowing an attacker to write data beyond the allocated heap memory region. This memory corruption can lead to arbitrary code execution, as the overflowed memory segments may contain critical program control structures such as return addresses or function pointers that can be manipulated by an attacker to redirect program execution flow. The vulnerability specifically impacts Chrome's WebRTC implementation as defined by the Common Weakness Enumeration standard CWE-121, which categorizes heap-based buffer overflow conditions that result from inadequate bounds checking.
The operational impact of this vulnerability extends beyond simple browser compromise, as it enables remote code execution capabilities that can be leveraged for various malicious activities including data exfiltration, system reconnaissance, and establishment of persistent access points. Attackers can exploit this vulnerability by hosting malicious web content that, when loaded in a victim's browser, automatically triggers the WebRTC processing path that leads to heap corruption. The vulnerability is particularly dangerous in environments where users frequently access untrusted websites or where browser-based attacks are common, as it requires no user interaction beyond visiting a malicious page. According to the MITRE ATT&CK framework, this vulnerability maps to techniques involving code injection and privilege escalation through browser-based exploitation, specifically targeting the browser's memory management subsystem.
Mitigation strategies for CVE-2022-2294 primarily focus on immediate remediation through browser updates to versions 103.0.5060.114 or later where the heap buffer overflow has been patched. Organizations should implement comprehensive patch management protocols to ensure all Chrome installations are updated promptly, as the vulnerability can be exploited remotely without user interaction. Additional protective measures include deploying web application firewalls that can detect and block suspicious WebRTC API usage patterns, implementing browser security policies that restrict WebRTC functionality in sensitive environments, and maintaining network monitoring systems capable of detecting anomalous traffic patterns associated with exploitation attempts. Security teams should also consider implementing sandboxing mechanisms that limit the impact of potential exploitation and establish incident response procedures specifically designed to address browser-based heap corruption vulnerabilities. The vulnerability demonstrates the critical importance of maintaining up-to-date browser security patches and highlights the risks associated with complex web technologies that require extensive memory management and real-time processing capabilities.