CVE-2024-52887 in Mobile Access
Summary
by MITRE • 04/27/2025
Authenticated end-user may set a specially crafted SNX bookmark that can make their browser run a script while accessing their own bookmark list.
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Analysis
by VulDB Data Team • 09/03/2025
The vulnerability identified as CVE-2024-52887 represents a significant security flaw in browser-based bookmark management systems that allows authenticated users to execute arbitrary scripts through maliciously crafted SNX bookmarks. This vulnerability specifically affects web applications that utilize SNX bookmark formats for storing user preferences and navigation shortcuts. The flaw stems from insufficient input validation and sanitization mechanisms within the bookmark parsing and rendering processes, creating an avenue for cross-site scripting attacks.
The technical implementation of this vulnerability involves the manipulation of SNX bookmark entries that contain specially crafted script payloads. When an authenticated user accesses their bookmark list, the application processes these entries without proper sanitization, allowing malicious scripts to execute in the context of the user's session. This type of vulnerability falls under the CWE-79 category for Cross-Site Scripting, specifically targeting the client-side rendering of user-controlled data. The attack vector operates through the bookmark management interface where users can store and retrieve navigation shortcuts, making it particularly dangerous as it leverages the trust relationship between the user and the application.
The operational impact of CVE-2024-52887 extends beyond simple script execution, as it can enable attackers to perform session hijacking, data exfiltration, and privilege escalation within the victim's browser context. An authenticated attacker can craft malicious bookmarks that persist in the user's bookmark list and execute whenever the user accesses their bookmarks, potentially capturing cookies, credentials, or other sensitive information. This vulnerability aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter, specifically targeting browser-based scripting environments. The persistence aspect of this vulnerability makes it particularly dangerous as it can remain active across multiple user sessions and browser restarts.
Mitigation strategies for CVE-2024-52887 should focus on implementing robust input validation and output encoding mechanisms within the bookmark processing pipeline. Applications must sanitize all user-supplied bookmark data before storage and ensure proper context-aware encoding when rendering bookmark entries in the browser. The implementation of Content Security Policy headers should be strengthened to prevent script execution within bookmark contexts, while also employing strict validation of SNX bookmark formats. Security measures should include regular security audits of bookmark management components and the implementation of automated scanning tools to detect potentially malicious bookmark entries. Additionally, user education regarding the risks of bookmark manipulation and the importance of verifying bookmark sources should be emphasized as part of a comprehensive defense-in-depth strategy.