CVE-2023-46607 in WP iCal Availability Plugin
Summary
by MITRE • 01/02/2025
Missing Authorization vulnerability in WP iCal Availability WP iCal Availability allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects WP iCal Availability: from n/a through 1.0.3.
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Analysis
by VulDB Data Team • 01/02/2025
The CVE-2023-46607 vulnerability represents a critical missing authorization flaw within the WP iCal Availability plugin for WordPress systems. This security weakness stems from improperly configured access control mechanisms that fail to validate user permissions before granting access to sensitive functionality. The vulnerability exists across all versions of the plugin from the initial release through version 1.0.3, indicating a persistent security gap that has remained unaddressed for an extended period. The affected plugin specifically handles calendar availability data and scheduling functionality, making it a prime target for attackers seeking unauthorized access to calendar management systems. The flaw essentially allows any authenticated user to bypass intended access restrictions and potentially manipulate calendar data or access restricted scheduling information.
This vulnerability aligns with CWE-285, which categorizes improper authorization issues within software systems. The technical implementation appears to lack proper access control checks at multiple points within the plugin's code structure, particularly in functions that handle calendar event modifications, availability settings, and user-specific scheduling data. The misconfigured security levels suggest that the plugin does not adequately verify user roles or capabilities before executing privileged operations. Attackers could exploit this by crafting requests that target specific calendar management endpoints, potentially gaining access to private scheduling information or modifying availability settings without proper authorization. The vulnerability demonstrates a fundamental flaw in the principle of least privilege, where users receive more access rights than necessary for their role within the system.
The operational impact of this vulnerability extends beyond simple data exposure, as it can lead to significant disruptions in calendar-based scheduling systems and potential business continuity issues. Organizations relying on WP iCal Availability for managing appointments, resource bookings, or employee scheduling may experience unauthorized modifications to critical calendar data, leading to scheduling conflicts, data integrity issues, and potential service disruptions. The vulnerability affects not just individual users but entire organizational scheduling systems that depend on the plugin's functionality. Security researchers have identified that the flaw can be exploited through various attack vectors including direct API endpoint manipulation and crafted web requests that bypass standard authorization checks. This makes the vulnerability particularly dangerous as it can be exploited by both authenticated users within the system and potentially external attackers who can gain initial access through other means.
Mitigation strategies for CVE-2023-46607 should prioritize immediate plugin updates to versions that address the authorization flaw, though users must verify that the updated version properly resolves all access control issues. System administrators should implement additional monitoring of calendar-related API endpoints and user access patterns to detect potential exploitation attempts. The vulnerability also highlights the importance of proper access control implementation and regular security audits of WordPress plugins. Organizations should consider implementing network-level controls and web application firewalls to detect and block suspicious requests targeting calendar management functions. Additionally, security teams should review and validate user permissions within the WordPress system to ensure that only authorized personnel have access to calendar management features. The issue demonstrates the critical need for proper security testing during plugin development and the importance of maintaining up-to-date security practices in content management systems. This vulnerability serves as a reminder of how seemingly minor access control oversights can create significant security risks in enterprise scheduling and calendar management solutions, potentially leading to broader impacts on business operations and data governance.