Executive Summary

CVE-2019-25404 is a stored cross-site scripting (XSS) vulnerability in Comodo Dome Firewall version 2.7.0. It allows authenticated attackers to inject malicious scripts by submitting specially crafted input through admin management parameters.

Attackers can inject script payloads into the admin_name, name, and surname parameters via POST requests to the /korugan/admins endpoint. These scripts are stored on the server and executed when administrators access the affected interface, potentially leading to unauthorized script execution in the context of the admin user.

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Impact Analysis

[{'type': 'paragraph', 'content': "This vulnerability can lead to unauthorized script execution within the administrator's interface of the Comodo Dome Firewall. An attacker who successfully exploits this flaw can execute malicious scripts in the context of an admin user, which may allow them to perform actions such as stealing sensitive information, manipulating firewall settings, or further compromising the system."}] [1]

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Compliance Impact

I don't know

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Detection Guidance

[{'type': 'paragraph', 'content': 'This vulnerability can be detected by monitoring POST requests to the /korugan/admins endpoint, specifically looking for suspicious or crafted input in the admin_name, name, and surname parameters.'}, {'type': 'paragraph', 'content': 'One way to detect potential exploitation attempts is to capture and analyze HTTP POST traffic targeting the /korugan/admins endpoint for unusual script payloads.'}, {'type': 'paragraph', 'content': 'Example commands to detect such activity could include using network traffic analysis tools like tcpdump or Wireshark to filter POST requests to the vulnerable endpoint.'}, {'type': 'list_item', 'content': "tcpdump -A -s 0 'tcp port 80 and (((ip[2:2] - ((ip[0]&0xf)<<2)) - ((tcp[12]&0xf0)>>2)) != 0)' | grep '/korugan/admins'"}, {'type': 'list_item', 'content': 'Use a web application firewall (WAF) or intrusion detection system (IDS) to alert on POST requests containing script tags or suspicious payloads in the admin_name, name, or surname parameters.'}] [1]

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Mitigation Strategies

Immediate mitigation steps include restricting access to the /korugan/admins endpoint to trusted administrators only and ensuring that only authenticated users with proper privileges can access it.

Additionally, input validation and sanitization should be applied to the admin_name, name, and surname parameters to prevent script injection.

If possible, apply any available patches or updates from Comodo that address this vulnerability.

As a temporary measure, monitoring and blocking suspicious POST requests containing script payloads targeting the vulnerable parameters can reduce risk.

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