Source: cve@mitre.org
Cross-site scripting (XSS) vulnerability in details_view.php in PHP Booking Calendar 10e allows remote attackers to inject arbitrary web script or HTML via the page_info_message parameter.
PHP Booking Calendar 10e is vulnerable to a cross-site scripting (XSS) attack, allowing attackers to inject malicious scripts into the application. This vulnerability, exploitable through the page_info_message parameter in details_view.php, could lead to account compromise, data theft, or website defacement.
Step 1: Payload Delivery: The attacker crafts a malicious URL containing a JavaScript payload within the page_info_message parameter. This payload is designed to execute arbitrary code within the victim's browser.
Step 2: User Interaction: The attacker lures a victim to click on the malicious URL. This could be through phishing, social engineering, or other means.
Step 3: Request Processing: The victim's browser sends a request to the vulnerable details_view.php script with the crafted page_info_message parameter.
Step 4: Vulnerable Code Execution: The details_view.php script retrieves the page_info_message parameter and, due to the lack of proper sanitization, directly includes it in the HTML response.
Step 5: Payload Execution: The victim's browser renders the HTML response, including the attacker's JavaScript payload. The browser then executes the injected JavaScript code.
Step 6: Attack Outcome: The injected JavaScript code executes, potentially leading to various malicious actions, such as stealing cookies, redirecting the user to a phishing site, or defacing the website.
The vulnerability stems from insufficient input validation and output encoding of the page_info_message parameter within the details_view.php file. The application fails to properly sanitize user-supplied input before displaying it on the webpage. This allows an attacker to inject arbitrary HTML or JavaScript code, which is then executed by the victim's browser when they view the affected page. The root cause is a lack of HTML encoding or escaping of the user-provided input before it is rendered in the HTML response. This allows the attacker to inject malicious scripts, leading to XSS.
Due to the age and nature of the vulnerability, it's unlikely to be directly associated with specific Advanced Persistent Threats (APTs) or sophisticated malware campaigns. However, it could be leveraged by less sophisticated actors for opportunistic attacks. CISA KEV status: Not Listed.
Web server logs analysis for suspicious requests containing JavaScript payloads in the page_info_message parameter.
Network traffic analysis for unusual HTTP requests targeting details_view.php with potentially malicious payloads.
Intrusion Detection System (IDS) and Intrusion Prevention System (IPS) rules to detect XSS attempts, specifically those targeting the page_info_message parameter.
Web Application Firewall (WAF) monitoring for XSS attacks and blocking malicious requests.
Implement robust input validation to sanitize the page_info_message parameter, ensuring that only expected data types and formats are accepted.
Employ output encoding (e.g., HTML encoding) to escape special characters in the page_info_message parameter before displaying it in the HTML response. This prevents the browser from interpreting the injected code as HTML or JavaScript.
Upgrade to the latest version of PHP Booking Calendar or apply security patches if available. If no patches are available, consider migrating to a more secure booking calendar solution.
Implement a Web Application Firewall (WAF) to filter malicious requests and block XSS attempts.
Conduct regular security audits and penetration testing to identify and address vulnerabilities.