CVE-2019-25425 in Comodo Dome Firewall
Summary
by MITRE • 02/19/2026
Comodo Dome Firewall 2.7.0 contains a reflected cross-site scripting vulnerability that allows attackers to inject malicious scripts by submitting crafted input to the VIRUS_ADMIN parameter. Attackers can send POST requests to the smtpconfig endpoint with script payloads to execute arbitrary JavaScript in the context of an administrator's browser session.
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Analysis
by VulDB Data Team • 02/19/2026
Comodo Dome Firewall version 2.7.0 suffers from a reflected cross-site scripting vulnerability that represents a critical security weakness in the application's input validation mechanisms. This vulnerability exists within the smtpconfig endpoint where the application fails to properly sanitize user-supplied input submitted through the VIRUS_ADMIN parameter. The flaw enables attackers to perform reflected XSS attacks by crafting malicious payloads and submitting them via POST requests, which are then executed in the browser context of authenticated administrators. The vulnerability stems from insufficient input sanitization and output encoding practices within the web application's handling of administrative configuration parameters.
The technical exploitation of this vulnerability follows a specific attack pattern where an attacker constructs a malicious POST request containing JavaScript code within the VIRUS_ADMIN parameter and submits it to the smtpconfig endpoint. When the application processes this input without proper validation or sanitization, the malicious script gets reflected back to the administrator's browser session, where it executes with the privileges of the authenticated user. This creates a persistent threat vector that can be leveraged for session hijacking, credential theft, or further privilege escalation within the firewall management interface. The vulnerability specifically affects the administrative functionality of the firewall, making it particularly dangerous as it targets high-privilege users.
The operational impact of this reflected XSS vulnerability extends beyond simple script execution, as it provides attackers with the ability to manipulate the administrative interface and potentially gain unauthorized access to sensitive firewall configurations. An attacker could leverage this vulnerability to modify email notification settings, alter security policies, or even redirect administrative traffic to malicious endpoints. The attack requires minimal user interaction beyond the initial POST request, making it particularly effective for social engineering campaigns where administrators might be tricked into visiting malicious links. This vulnerability directly violates security principles outlined in CWE-79, which addresses cross-site scripting flaws, and aligns with ATT&CK technique T1211 for lateral movement through malicious script execution.
Mitigation strategies for this vulnerability should prioritize immediate patching of the Comodo Dome Firewall application to the latest version that addresses the XSS flaw. Organizations should implement comprehensive input validation and output encoding mechanisms at all entry points, particularly for administrative parameters. Network segmentation and privilege separation can help limit the impact of successful exploitation by reducing the scope of administrative access. Additionally, implementing web application firewalls and content security policies can provide additional layers of protection against reflected XSS attacks. Regular security assessments and input validation reviews should be conducted to identify similar vulnerabilities in other administrative interfaces. The vulnerability demonstrates the importance of following secure coding practices and implementing defense-in-depth strategies as outlined in various cybersecurity frameworks including NIST SP 800-53 and ISO 27001 standards for application security controls.