Source: cve@mitre.org
Seo Panel 4.8.0 allows stored XSS by an Authenticated User via the url parameter, as demonstrated by the seo/seopanel/websites.php URI.
Seo Panel 4.8.0 suffers from a stored cross-site scripting (XSS) vulnerability, allowing an authenticated attacker to inject malicious JavaScript into the application. This could lead to account compromise, data theft, or complete control of the affected web server if successfully exploited by an attacker.
Step 1: Authentication: The attacker must first authenticate to the Seo Panel application with valid credentials.
Step 2: Payload Injection: The attacker crafts a malicious payload containing JavaScript (e.g., <script>alert('XSS')</script>) and injects it into the url parameter when creating or updating a website entry through the seo/seopanel/websites.php URI.
Step 3: Payload Storage: The application stores the attacker-supplied, unsanitized url parameter, including the malicious JavaScript, in the database.
Step 4: Payload Retrieval and Rendering: When a legitimate user views the website information (e.g., through the website list or details page), the application retrieves the stored url parameter from the database.
Step 5: XSS Execution: The application renders the retrieved url parameter in the user's browser without proper HTML encoding or sanitization. This causes the injected JavaScript to execute within the user's browser context, leading to the XSS vulnerability.
The vulnerability stems from insufficient input validation and output encoding within the seo/seopanel/websites.php URI. Specifically, the application fails to properly sanitize the url parameter before storing it in the database and subsequently rendering it in the user's browser. This allows an attacker to inject arbitrary HTML and JavaScript code. The root cause is a lack of input validation and output encoding (e.g., HTML escaping) for the url parameter. The application trusts the user-supplied input without proper sanitization, leading to the execution of malicious scripts when the website information is displayed.
While no specific APT groups are directly linked to this CVE, the nature of XSS makes it a common tool for various threat actors. This vulnerability could be leveraged by attackers for credential harvesting, session hijacking, and defacement. CISA KEV status: Not Listed
Web Application Firewall (WAF) logs showing suspicious HTTP requests containing JavaScript payloads in the url parameter to seo/seopanel/websites.php.
Network traffic analysis revealing unusual HTTP requests with potentially malicious JavaScript code in the url parameter.
Server-side logs indicating the creation or modification of website entries with suspicious url values.
Security Information and Event Management (SIEM) systems configured to detect XSS attempts based on signature matching or behavioral analysis.
File integrity monitoring to detect changes to the websites.php file or related files that might indicate exploitation.
Upgrade to a patched version of Seo Panel that addresses the XSS vulnerability. Check the vendor's website for available updates.
Implement input validation to sanitize the url parameter, ensuring that it only accepts expected data formats and characters. This should be done on the server-side.
Implement output encoding (e.g., HTML escaping) when rendering the url parameter in the user's browser. This prevents the execution of malicious JavaScript.
Use a Web Application Firewall (WAF) to filter out malicious requests containing XSS payloads.
Regularly scan the web application for vulnerabilities using automated vulnerability scanners.
Implement the principle of least privilege, restricting user access to only the necessary resources.
Educate users about the risks of XSS and phishing attacks.