Overview
A significant security vulnerability, identified as CVE-2025-52668, has been discovered in Revive Adserver. This vulnerability affects versions 5.5.2 and 6.0.1 and potentially earlier versions. The issue stems from improper input neutralization within the stats-conversions.php script, making it susceptible to a stored Cross-Site Scripting (XSS) attack. Successful exploitation of this vulnerability could lead to information disclosure and session hijacking, compromising the security of your Revive Adserver instance and advertising campaigns.
Technical Details
The vulnerability lies within the stats-conversions.php script. Insufficient sanitization of user-supplied input allows an attacker to inject malicious JavaScript code into the application’s database. When other users access the compromised data (e.g., through reports or administration panels), the injected script is executed within their browsers. This is a stored XSS vulnerability because the malicious script is persistently stored within the Revive Adserver system.
Specifically, an attacker could potentially inject malicious code through fields related to conversion tracking. When an administrator or another user views the conversion statistics, the malicious JavaScript will execute in their browser. This could allow the attacker to:
- Steal session cookies, leading to session hijacking.
- Deface the Revive Adserver interface.
- Redirect users to phishing websites.
- Potentially gain administrative access to the Revive Adserver instance.
CVSS Analysis
Currently, no CVSS score is available for CVE-2025-52668. However, given that it is a stored XSS vulnerability with the potential for information disclosure and session hijacking, it’s reasonable to assume a High severity rating is warranted. A complete CVSS assessment will be added when it becomes available. Factors influencing the potential CVSS score include the ease of exploitation, the scope of the impact (user interaction required), and the confidentiality, integrity, and availability impacts.
Possible Impact
The exploitation of CVE-2025-52668 can have several serious consequences:
- Information Disclosure: Sensitive information, such as user credentials and campaign data, could be exposed to unauthorized parties.
- Session Hijacking: Attackers could steal user session cookies and impersonate legitimate users, potentially gaining administrative control.
- Website Defacement: Malicious scripts could alter the appearance of the Revive Adserver interface, damaging the reputation of the affected organization.
- Malware Distribution: The vulnerability could be used to inject malicious code into the Revive Adserver system, potentially distributing malware to users who interact with the compromised platform.
- Campaign Manipulation: Advertising campaigns could be altered, redirecting traffic to malicious sites or displaying inappropriate content.
Mitigation and Patch Steps
The most crucial step to mitigate CVE-2025-52668 is to upgrade your Revive Adserver installation to a version that includes a fix for this vulnerability. Check the official Revive Adserver website for the latest updates and security patches.
In the meantime, consider the following temporary mitigation steps:
- Input Validation: Review and enhance input validation routines within the
stats-conversions.phpscript. Sanitize all user-supplied input to prevent the injection of malicious code. Implement whitelisting of allowed characters and encoding of special characters. - Web Application Firewall (WAF): Implement or configure a Web Application Firewall (WAF) to detect and block XSS attacks targeting the Revive Adserver instance.
- Regular Security Audits: Conduct regular security audits of the Revive Adserver installation to identify and address potential vulnerabilities.
- Principle of Least Privilege: Ensure users have only the necessary permissions to perform their tasks. Limit administrative access to trusted personnel.
References
HackerOne Report: CVE-2025-52668 Details
Revive Adserver Official Website
