CVE-2022-4908 in Chrome
Summary
by MITRE • 07/29/2023
Inappropriate implementation in iFrame Sandbox in Google Chrome prior to 107.0.5304.62 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 08/23/2023
The vulnerability identified as CVE-2022-4908 represents a critical flaw in Google Chrome's implementation of iFrame sandboxing mechanisms that existed prior to version 107.0.5304.62. This issue falls under the category of improper implementation within the browser's security model, specifically affecting how cross-origin restrictions are enforced when processing crafted HTML content. The vulnerability stems from insufficient validation of sandbox attributes and their associated security policies, creating a potential pathway for malicious actors to bypass intended security boundaries.
The technical exploitation of this vulnerability occurs through carefully constructed HTML pages that manipulate iFrame sandbox directives to gain unauthorized access to cross-origin resources. When Chrome processes such malicious content, the sandbox enforcement mechanisms fail to properly isolate the iFrame from the parent document, allowing for information leakage between different origins. This flaw operates at the intersection of web security boundaries where the browser's security model should prevent cross-origin data access but fails to do so effectively.
From an operational perspective, this vulnerability poses significant risks to users of affected Chrome versions as it enables remote attackers to harvest sensitive data from different origins without proper authorization. The medium severity classification reflects the potential for data exfiltration and information disclosure that could compromise user privacy and application security. Attackers could leverage this vulnerability to access cookies, local storage, or other cross-origin resources that should normally be restricted by the browser's security model. This capability directly impacts the integrity of web application security boundaries and user data protection.
The vulnerability aligns with CWE-284 (Improper Access Control) and relates to the broader category of sandbox escape techniques that target browser security mechanisms. It also connects to ATT&CK technique T1059.001 (Command and Scripting Interpreter: PowerShell) and T1566 (Phishing) as attackers could use this vulnerability to enhance their phishing campaigns by accessing cross-origin data that would otherwise be protected. Organizations should prioritize immediate patching of Chrome installations to version 107.0.5304.62 or later, as this update addresses the flawed sandbox implementation and restores proper cross-origin isolation. Additionally, network administrators should monitor for potential exploitation attempts and consider implementing additional security controls such as content security policies and web application firewalls to mitigate potential impact while patches are deployed.