Overview
A critical security vulnerability, designated as CVE-2025-29471, has been identified in the Nagios Log Server version 2024R1.3.1. This vulnerability allows a remote attacker to execute arbitrary code through a Cross Site Scripting (XSS) attack, specifically by injecting a malicious payload into the Email field. This vulnerability, if exploited, can lead to a full system compromise or data leakage, posing a significant risk to businesses and individuals using the affected software.
Vulnerability Summary
CVE ID: CVE-2025-29471
Severity: High (8.3/10 on the CVSS scale)
Attack Vector: Network
Privileges Required: None
User Interaction: Required
Impact: Potential system compromise and data leakage
Affected Products
No phone number, email, or personal info required.
Product | Affected Versions
Nagios Log Server | v.2024R1.3.1
How the Exploit Works
This exploit works by taking advantage of the lack of proper sanitization of the Email field in the Nagios Log Server. An attacker can inject a malicious payload, typically scripts, into the email field which is then executed when the page is rendered. This allows the attacker to execute arbitrary code with the permissions of the user viewing the page. The attacker can then potentially gain unauthorized access or leak sensitive data.
Conceptual Example Code
Imagine the following HTTP POST request, which an attacker might use to exploit the vulnerability:
POST /login HTTP/1.1
Host: nagioslogserver.example.com
Content-Type: application/x-www-form-urlencoded
email=<script>malicious_payload</script>&password=passIn this example, the `malicious_payload` is a script that the attacker wants to execute on the server or on the client’s browser. It could be designed to steal session cookies, perform actions as the logged-in user, or even to deliver malware.
Mitigation
It is highly recommended to apply the latest vendor patch to mitigate this vulnerability. If it is not possible to apply the patch immediately, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can offer temporary protection by blocking attempts to exploit this vulnerability. Regularly updating and patching software can prevent such vulnerabilities from being exploited.