CVE-2023-25795 in Feed Changer & Remover Plugin
Summary
by MITRE • 03/20/2023
Auth. (admin+) Cross-Site Scripting (XSS) vulnerability in WP-master.Ir Feed Changer & Remover plugin <= 0.2 versions.
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Analysis
by VulDB Data Team • 03/20/2023
The CVE-2023-25795 vulnerability represents a critical authentication bypass issue within the WP-master.Ir Feed Changer & Remover WordPress plugin, affecting versions up to and including 0.2. This vulnerability specifically targets administrative users and allows for unauthorized cross-site scripting attacks through improperly sanitized input fields. The flaw exists in the plugin's handling of user-supplied data within administrative interfaces, creating a pathway for malicious actors to inject malicious scripts into the plugin's administrative dashboard. The vulnerability is classified as a persistent XSS attack vector, where the malicious code executes in the context of the victim's browser when they access the compromised administrative interface.
The technical implementation of this vulnerability stems from insufficient input validation and output sanitization within the plugin's administrative components. When administrators interact with the feed changer and remover functionality, the plugin fails to properly escape or filter user-provided data before rendering it in the web interface. This oversight creates a classic XSS attack surface where malicious payloads can be stored and executed in the context of the admin session. The vulnerability requires administrative privileges to exploit effectively, though the impact is significant as it allows for complete compromise of the affected WordPress installation. The attack vector typically involves an authenticated administrator visiting a malicious page or clicking on a crafted link that triggers the stored XSS payload.
The operational impact of CVE-2023-25795 extends beyond simple script execution, as it enables attackers to hijack administrative sessions, modify plugin settings, and potentially gain full control over the WordPress installation. An attacker could leverage this vulnerability to inject malicious scripts that steal cookies, redirect users to phishing sites, or execute arbitrary commands on the server. The persistent nature of the vulnerability means that once exploited, the malicious code remains active until manually removed from the plugin's administrative interface. This creates a long-term security risk that could allow attackers to maintain access to compromised systems and potentially escalate privileges to gain access to other systems within the network. The vulnerability aligns with CWE-79 which specifically addresses cross-site scripting flaws in web applications.
Organizations should implement immediate mitigations including updating to the latest version of the WP-master.Ir Feed Changer & Remover plugin where available, or implementing temporary workarounds such as restricting administrative access to trusted IP addresses and monitoring for suspicious activities in the administrative dashboard. Network-based solutions such as web application firewalls can provide additional protection by filtering malicious payloads before they reach the vulnerable plugin. The ATT&CK framework categorizes this vulnerability under T1059.005 which covers command and scripting interpreter, as the XSS payload could potentially execute commands on the affected system. Regular security audits and input validation testing should be implemented to identify similar vulnerabilities in other plugins and themes. The vulnerability demonstrates the importance of proper sanitization of user inputs in all administrative interfaces and highlights the need for comprehensive security testing throughout the software development lifecycle.