CVE-2024-7529 in Firefox
Summary
by MITRE • 08/06/2024
The date picker could partially obscure security prompts. This could be used by a malicious site to trick a user into granting permissions. This vulnerability affects Firefox < 129, Firefox ESR < 115.14, and Firefox ESR < 128.1.
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Analysis
by VulDB Data Team • 03/15/2025
The vulnerability identified as CVE-2024-7529 represents a significant security concern within the Firefox browser ecosystem, specifically targeting the user interface components responsible for date selection and security prompt visibility. This flaw exists in multiple Firefox versions including Firefox 128 and earlier, Firefox ESR 115.13 and earlier, and Firefox ESR 128 and earlier, creating a widespread impact across both regular and extended support release channels. The core issue stems from improper layering and rendering behavior of the date picker component which can visually overlap or obscure critical security notifications and permission prompts that users typically rely upon for making informed decisions about their browser security.
The technical nature of this vulnerability falls under the category of user interface deception and can be classified as a CWE-693 Protection Mechanism Failure, where the intended security controls are rendered ineffective due to improper implementation. When users encounter security prompts related to permissions, cookies, or other sensitive operations, the date picker interface element can partially block these notifications, creating a scenario where users might inadvertently grant permissions without proper awareness of the security implications. This behavior exploits the fundamental principle of security by design, where critical security information must remain clearly visible and accessible to users during decision-making processes.
The operational impact of this vulnerability extends beyond simple visual interference, creating potential attack vectors for social engineering campaigns and phishing attempts. Malicious websites could exploit this behavior by strategically placing date picker elements near security prompts, thereby reducing the visibility of permission requests and increasing the likelihood of user consent. This creates a scenario where attackers can manipulate user attention and decision-making processes, effectively bypassing the browser's security mechanisms that are designed to protect users from unauthorized access to their systems and data. The vulnerability particularly affects user interaction patterns where date selection is common, such as in forms, login portals, and web applications that require time-based inputs.
From an attacker perspective, this vulnerability aligns with techniques described in the MITRE ATT&CK framework under the T1566 phase of social engineering, specifically targeting the user's decision-making process through interface manipulation. The flaw enables attackers to perform what is commonly referred to as "prompt bombing" or "security prompt obfuscation," where legitimate security warnings are obscured to increase the probability of user compliance with malicious requests. Organizations and security professionals should recognize this as a critical issue requiring immediate attention, particularly in environments where users interact with untrusted websites or where security awareness is paramount. The remediation process involves updating to patched versions of Firefox and Firefox ESR, with the affected versions being specifically noted to require immediate patching to prevent exploitation.
This vulnerability demonstrates the importance of comprehensive security testing for user interface components, as seemingly minor visual elements can create significant security implications. The issue highlights the need for proper z-index management and layering controls in browser interfaces, ensuring that security-critical elements maintain their visibility regardless of other interface components. Security teams should implement monitoring for potential exploitation attempts and consider the broader implications of interface design choices on security effectiveness, particularly when dealing with elements that interact with user attention and decision-making processes. The vulnerability serves as a reminder that user experience and security must be carefully balanced, and that interface design decisions can have profound implications for overall system security posture.