CVE-2022-3056 in Chrome
Summary
by MITRE • 09/26/2022
Insufficient policy enforcement in Content Security Policy in Google Chrome prior to 105.0.5195.52 allowed a remote attacker to bypass content security policy via a crafted HTML page.
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Analysis
by VulDB Data Team • 05/21/2025
The vulnerability identified as CVE-2022-3056 represents a critical weakness in Google Chrome's Content Security Policy (CSP) implementation that existed prior to version 105.0.5195.52. This flaw constitutes a significant security regression that undermines the fundamental web security mechanism designed to prevent cross-site scripting attacks and other code injection vulnerabilities. The issue stems from insufficient policy enforcement within Chrome's CSP framework, creating a potential attack vector that allows remote adversaries to circumvent security controls that should otherwise protect users from malicious content.
The technical flaw manifests in how Chrome processes and enforces CSP directives when rendering crafted HTML pages. Specifically, the browser's Content Security Policy parser fails to properly validate or enforce certain policy constraints, enabling attackers to craft malicious web pages that contain embedded scripts or other potentially harmful content. This bypass occurs through subtle manipulation of HTML elements or attributes that should be restricted by CSP policies, allowing execution of unauthorized code within the browser context. The vulnerability is particularly concerning because CSP is a critical defense-in-depth mechanism that web applications rely upon to prevent various forms of injection attacks and unauthorized resource loading.
The operational impact of this vulnerability extends beyond simple privilege escalation or data theft. Attackers can leverage this weakness to execute arbitrary JavaScript code in contexts where CSP should have prevented such execution, potentially leading to session hijacking, data exfiltration, or further exploitation of the victim's browser. The remote nature of the attack means that users can be compromised simply by visiting a malicious website, making this vulnerability particularly dangerous in phishing campaigns or compromised websites. This weakness directly undermines the principle of least privilege that CSP enforces, allowing attackers to bypass security controls that should isolate potentially malicious content from legitimate application functionality.
Organizations and security teams should prioritize immediate patching of affected Chrome installations to mitigate this vulnerability. The remediation involves updating to Chrome version 105.0.5195.52 or later, which includes the necessary fixes to properly enforce Content Security Policy directives. Additional defensive measures include implementing additional monitoring for suspicious CSP violations, reviewing existing CSP policies for potential weaknesses, and ensuring that web applications properly implement CSP headers with strict policies. This vulnerability aligns with CWE-693, which covers protection mechanism failures, and corresponds to techniques described in the ATT&CK framework under T1211 for exploit prevention and T1566 for social engineering attacks that leverage browser vulnerabilities. Security professionals should also consider implementing browser security extensions and monitoring for anomalous CSP policy violations as part of their overall defense strategy.