CVE-2024-11919 is a vulnerability identified in the Intents handling mechanism of Google Chrome on Android platforms prior to version 129.0.6668.58. Intents in Android are messaging objects used to request actions from other app components. The inappropriate implementation here allows a remote attacker to craft a malicious HTML page that can spoof the user interface, misleading users into believing they are interacting with legitimate UI elements. This spoofing could be leveraged to trick users into performing unintended actions, such as entering sensitive information or approving malicious requests. The vulnerability is classified under CWE-451, which relates to improper implementation of a security feature. The CVSS v3.1 base score is 4.3 (medium), reflecting that the attack vector is network-based, requires no privileges, but does require user interaction. The impact is limited to availability (minor), with no direct confidentiality or integrity compromise. No known exploits have been reported in the wild, and Google has released a patched version (129.0.6668.58) to address this issue. The vulnerability highlights the importance of secure Intent handling and UI validation in mobile browsers to prevent social engineering attacks.

For European organizations, the primary risk is the potential for UI spoofing to facilitate phishing or social engineering attacks on Android users using vulnerable Chrome versions. This could lead to credential theft, unauthorized actions, or malware installation if users are deceived. While the vulnerability itself does not directly compromise data confidentiality or integrity, the secondary effects of successful spoofing could impact sensitive information and operational security. Organizations with mobile-first workforces or those relying heavily on Android devices for accessing corporate resources are at increased risk. The limited severity and lack of known exploits reduce immediate threat levels, but the widespread use of Chrome on Android in Europe means the attack surface is significant. Critical sectors such as finance, healthcare, and government could face targeted phishing campaigns exploiting this vulnerability.

European organizations should ensure all Android devices running Google Chrome are updated to version 129.0.6668.58 or later to eliminate this vulnerability. Mobile device management (MDM) solutions can enforce browser updates and restrict installation of outdated versions. User awareness training should emphasize caution with unexpected links and prompts in mobile browsers to reduce the effectiveness of UI spoofing attacks. Implementing multi-factor authentication (MFA) can mitigate the impact of credential theft resulting from phishing. Security teams should monitor for suspicious activity indicative of social engineering exploitation. Additionally, organizations can consider deploying mobile threat defense (MTD) solutions that detect and block malicious web content and spoofing attempts. Regular vulnerability assessments and penetration testing on mobile platforms can help identify residual risks related to UI spoofing.