CVE-2023-1880 in phpmyfaq
Summary
by MITRE • 04/05/2023
Cross-site Scripting (XSS) - Reflected in GitHub repository thorsten/phpmyfaq prior to 3.1.12.
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Analysis
by VulDB Data Team • 04/23/2023
The vulnerability identified as CVE-2023-1880 represents a reflected cross-site scripting flaw within the thorsten/phpmyfaq GitHub repository affecting versions prior to 3.1.12. This issue resides in the web application's input validation mechanisms where user-supplied data is not properly sanitized before being rendered in web pages. The vulnerability allows attackers to inject malicious scripts that execute in the context of other users' browsers, potentially leading to session hijacking, data theft, or unauthorized actions within the application's security boundaries.
The technical implementation of this reflected XSS vulnerability occurs when the application processes user input through URL parameters or form fields without adequate sanitization or output encoding. When malicious payloads are submitted through these entry points and subsequently displayed in the application's response without proper HTML escaping, the browser executes the injected script code. This type of vulnerability falls under CWE-79 which specifically addresses cross-site scripting flaws in web applications. The attack vector typically involves crafting malicious URLs containing script payloads that, when clicked by victims, execute the attacker's code within the victim's browser session.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to escalate privileges and compromise user sessions. An attacker could craft malicious links that, when clicked by authenticated users, steal session cookies or perform unauthorized actions on behalf of the victim. The reflected nature of this vulnerability means that the malicious script is not stored on the server but rather injected into the response dynamically, making it particularly challenging to detect through traditional security scanning methods. This vulnerability specifically affects the phpmyfaq application which is commonly used for knowledge base management, making it a potential target for attackers seeking to compromise documentation systems.
Mitigation strategies for CVE-2023-1880 should focus on implementing proper input validation and output encoding mechanisms throughout the application. The most effective solution involves upgrading to phpmyfaq version 3.1.12 or later where the vulnerability has been addressed through improved sanitization of user inputs. Additionally, developers should implement Content Security Policy headers to limit script execution capabilities, employ proper HTML escaping for all dynamic content, and validate all user-supplied data against whitelists of acceptable characters. The ATT&CK framework categorizes this vulnerability under T1531 which deals with establishing persistence through web shell creation, though the immediate impact focuses on the initial execution phase of reflected XSS attacks. Organizations should also implement regular security scanning and code review processes to identify similar input validation flaws in their web applications, as the vulnerability demonstrates the importance of proper sanitization practices in preventing client-side attack vectors that can lead to more severe security compromises.