CVE-2022-0201 in Permalink Manager Lite Plugin
Summary
by MITRE • 02/14/2022
The Permalink Manager Lite WordPress plugin before 2.2.15 and Permalink Manager Pro WordPress plugin before 2.2.15 do not sanitise and escape query parameters before outputting them back in the debug page, leading to a Reflected Cross-Site Scripting issue
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 02/17/2022
The vulnerability identified as CVE-2022-0201 affects the Permalink Manager Lite and Permalink Manager Pro WordPress plugins, specifically versions prior to 2.2.15. This issue represents a classic reflected cross-site scripting vulnerability that arises from insufficient input validation and output sanitization practices within the plugin's debug functionality. The flaw exists in how the software handles query parameters when displaying debug information, creating an avenue for malicious actors to inject arbitrary scripts into the victim's browser session.
The technical implementation of this vulnerability stems from the plugin's failure to properly sanitize and escape user-supplied query parameters before incorporating them into debug output pages. When users access the debug functionality of these plugins, the system directly reflects incoming parameters without adequate sanitization measures. This creates a scenario where an attacker can craft malicious URLs containing script payloads that get executed in the context of a victim's browser when they view the debug page. The vulnerability manifests as a reflected XSS because the malicious script code is reflected back from the server in response to a user-supplied input, rather than being stored on the server.
From an operational perspective, this vulnerability presents significant risks to WordPress site administrators and users who may inadvertently access maliciously crafted URLs. The attack vector typically involves social engineering tactics where users are tricked into clicking on malicious links that contain XSS payloads designed to steal session cookies, redirect users to malicious sites, or perform unauthorized actions on behalf of the victim. The impact extends beyond simple script execution as it can potentially lead to complete session hijacking, privilege escalation, or further exploitation of the compromised WordPress installation.
The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws in software applications. According to the ATT&CK framework, this issue falls under the T1566 technique category related to malicious code in files, where attackers leverage XSS vulnerabilities to establish persistent access or execute malicious commands. The affected plugins' debug functionality serves as an attack surface that directly violates secure coding practices recommended by OWASP and other cybersecurity organizations. The lack of proper input validation and output encoding creates a direct pathway for attackers to bypass security controls and execute unauthorized scripts within the victim's browser context.
Mitigation strategies for this vulnerability include immediate patching to versions 2.2.15 or later where the sanitization and escaping mechanisms have been properly implemented. Site administrators should also consider implementing Content Security Policy headers to limit script execution capabilities, monitor debug page access logs for suspicious activity, and educate users about the dangers of clicking untrusted links. Additionally, regular security audits of WordPress plugins and themes should be conducted to identify similar sanitization issues that may exist in other components of the WordPress ecosystem. The fix implemented by the plugin developers addresses the root cause by ensuring all query parameters are properly escaped before being displayed in debug contexts, thereby preventing malicious script injection attempts.