Severity: CRITICAL
Description: The N-central server is vulnerable to an authentication bypass of the user interface. This vulnerability is present in all deployments of N-central prior to 2024.2. This vulnerability was discovered through internal N-central source code review and N-able has not observed any exploitation in the wild.
CVSS Score: 9.1
B
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1. Risk Assessment
The CVE-2024-28200 vulnerability in N-central servers is a critical authentication bypass issue affecting all deployments prior to version 2024.2. This vulnerability allows attackers to bypass the user interface authentication mechanism, granting unauthorized access to the system. The CVSS score of 9.1 (CRITICAL) underscores its severity, with high impacts on confidentiality and integrity, though availability remains unaffected. The attack vector is network-based, requiring no user interaction or privileges, making it highly exploitable. The likelihood of exploitation is significant due to the low attack complexity and the absence of observed exploitation in the wild does not diminish the risk, as the vulnerability is easily automatable. Businesses relying on N-central for IT management face severe risks, including unauthorized access to sensitive data, potential data manipulation, and compromised system integrity.
2. Potential Attack Scenarios
An attacker could exploit this vulnerability by crafting a network request that bypasses the authentication mechanism of the N-central server. The attack process begins with the attacker identifying an exposed N-central server instance. Using a crafted request, the attacker bypasses the login interface, gaining unauthorized access to the server's administrative functions. Once inside, the attacker could exfiltrate sensitive data, such as customer information, credentials, or configuration details. Additionally, the attacker could modify system settings, deploy malicious scripts, or escalate privileges to further compromise the environment. The potential outcomes include data breaches, operational disruptions, and reputational damage for the affected organization.
3. Mitigation Recommendations
The primary mitigation for this vulnerability is to upgrade N-central to version 2024.2 or higher immediately. Organizations should prioritize this update to eliminate the authentication bypass risk. If immediate patching is not feasible, restrict network access to the N-central server to trusted IP addresses only. Additionally, monitor network traffic for unusual activity that may indicate exploitation attempts. For further guidance, refer to the official N-able documentation at https://documentation.n-able.com/N-central/Release_Notes/GA/Content/2024.2%20Release%20Notes.htm and the security advisory at https://me.n-able.com/s/security-advisory/aArVy0000000673KAA/cve202428200-ncentral-authentication-bypass.
4. Executive Summary
CVE-2024-28200 is a critical authentication bypass vulnerability in N-central servers, posing significant risks to organizations using versions prior to 2024.2. This flaw allows attackers to gain unauthorized access to sensitive systems and data without requiring user interaction or privileges. The high CVSS score of 9.1 reflects the severe impact on confidentiality and integrity, making it a top priority for remediation. Attack scenarios involve unauthorized access leading to data breaches and system manipulation. Immediate action is required to mitigate this risk, including upgrading to N-central version 2024.2 or higher and restricting network access. Failure to address this vulnerability could result in substantial business impacts, including financial losses, regulatory penalties, and reputational harm. Organizations must act swiftly to protect their systems and data.