CVE-2023-4359 in Chrome
Summary
by MITRE • 08/15/2023
Inappropriate implementation in App Launcher in Google Chrome on iOS prior to 116.0.5845.96 allowed a remote attacker to potentially spoof elements of the security UI via a crafted HTML page. (Chromium security severity: Medium)
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Analysis
by VulDB Data Team • 09/09/2023
The vulnerability identified as CVE-2023-4359 represents a significant security flaw in Google Chrome's App Launcher implementation on iOS platforms. This issue stems from an inadequate handling of security user interface elements within the browser's mobile variant, creating potential attack vectors for remote threat actors. The flaw specifically affects Chrome versions prior to 116.0.5845.96, indicating a targeted window of exposure where users were particularly vulnerable to sophisticated social engineering attacks. The vulnerability falls under the category of improper implementation within security-critical components, making it particularly concerning for mobile browser environments where users frequently interact with potentially malicious content.
The technical nature of this vulnerability involves the manipulation of security UI elements through crafted HTML pages that can deceive users into believing they are interacting with legitimate browser components. Attackers can exploit this weakness to create convincing facsimiles of genuine security warnings, authentication prompts, or navigation elements that appear to originate from the browser itself. This type of attack directly targets user trust and confidence in the browser's security mechanisms, potentially enabling more serious exploits such as credential theft, data exfiltration, or unauthorized transactions. The flaw demonstrates a failure in proper validation and rendering of security-critical UI components, allowing malicious actors to bypass normal browser security boundaries.
From an operational standpoint, this vulnerability creates substantial risk for iOS users who rely on Chrome for their browsing activities, particularly in environments where mobile security is paramount. The medium severity classification indicates that while the vulnerability may not immediately enable complete system compromise, it provides attackers with a foothold for more sophisticated attacks. Users may be tricked into performing actions based on false security prompts, potentially leading to financial loss, privacy breaches, or further exploitation. The remote nature of this attack means that users can be compromised simply by visiting malicious websites, making it particularly dangerous in mobile environments where users may be less vigilant about website authenticity.
The vulnerability aligns with CWE-693, which addresses protection mechanism failures in security systems, specifically focusing on inadequate implementation of security controls. It also maps to ATT&CK technique T1566.002, which involves social engineering through spearphishing with malicious attachments or links. Organizations should prioritize immediate patching of affected Chrome versions to mitigate this risk. Users should be educated about the importance of keeping their browser updated and should be trained to recognize suspicious UI elements. Security teams should implement monitoring for unusual browser behavior and consider deploying additional security layers such as content filtering solutions and browser security extensions. Regular security assessments of mobile browser environments are essential to identify similar implementation gaps that could be exploited by threat actors. The incident underscores the critical importance of maintaining robust security controls in mobile browser environments where user interaction with potentially malicious content is common.