CVE-2023-1883 in phpmyfaq
Summary
by MITRE • 04/05/2023
Improper Access Control in GitHub repository thorsten/phpmyfaq prior to 3.1.12.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 07/06/2025
The vulnerability identified as CVE-2023-1883 represents a critical improper access control flaw within the thorsten/phpmyfaq GitHub repository software prior to version 3.1.12. This issue stems from inadequate authorization mechanisms that allow unauthorized users to bypass normal security restrictions and gain access to restricted resources or functionality. The vulnerability specifically affects the phpMyFAQ application which is a widely used open-source knowledge base management system designed to facilitate the creation and maintenance of frequently asked questions databases. The improper access control vulnerability manifests when the application fails to properly validate user permissions before granting access to administrative functions, sensitive data, or system configuration options.
Technical exploitation of this vulnerability occurs through the manipulation of access control checks that should normally verify user credentials and privileges before permitting access to protected resources. Attackers can leverage this flaw to perform unauthorized actions such as accessing administrative panels, modifying database content, viewing restricted user information, or executing privileged operations without proper authentication. The vulnerability likely exists in the application's permission validation logic where it fails to adequately verify whether a user possesses the necessary privileges for specific operations. This weakness falls under the CWE-285 category of Improper Authorization, which is classified as a critical security concern in the Common Weakness Enumeration catalog. The flaw enables attackers to escalate privileges or access data that should be restricted to authorized personnel only, potentially leading to complete system compromise.
The operational impact of CVE-2023-1883 extends beyond simple unauthorized access to include potential data breaches, system integrity compromise, and unauthorized modification of critical application components. Organizations using affected versions of phpMyFAQ may experience unauthorized data exposure, where sensitive information stored in the knowledge base becomes accessible to malicious actors. The vulnerability also poses significant risks to system availability and integrity, as attackers could potentially disrupt normal operations or inject malicious content into the knowledge base. This type of access control failure aligns with ATT&CK technique T1078 which covers Valid Accounts and Privilege Escalation, where adversaries exploit weaknesses in authentication mechanisms to gain elevated privileges. The impact is particularly severe for organizations relying on phpMyFAQ for managing sensitive documentation or internal knowledge bases, as the vulnerability could expose confidential information or allow attackers to establish persistent access to the system.
Mitigation strategies for CVE-2023-1883 primarily involve immediate deployment of the patched version 3.1.12 or later, which addresses the improper access control implementation. System administrators should also implement additional security measures including regular access control audits, proper user privilege management, and network segmentation to limit potential attack surfaces. The vulnerability highlights the importance of proper input validation and authorization checks in web applications, emphasizing the need for defense-in-depth approaches. Organizations should conduct thorough security assessments of their phpMyFAQ installations to identify any potential exploitation attempts and implement monitoring solutions to detect suspicious access patterns. The fix implemented in version 3.1.12 likely includes enhanced permission validation routines and improved session management to ensure that only authorized users can access protected resources. Security teams should also consider implementing automated patch management processes to ensure timely deployment of security updates and maintain continuous monitoring of their systems for similar access control vulnerabilities.