CVE-2024-51504 is a critical vulnerability affecting Apache ZooKeeper, particularly its Admin Server when utilizing the IPAuthenticationProvider. This vulnerability allows for authentication bypass by spoofing the client's IP address, primarily impacting setups that rely on IP-based authentication. The default configuration for detecting the client's IP address in the IPAuthenticationProvider is flawed, as it uses HTTP request headers that can be easily manipulated by attackers.
The vulnerability has a CVSS score of 9.1, categorizing it as critical. The implications of this vulnerability are severe, with the potential for unauthorized access to sensitive commands such as snapshots and restores. This could lead to significant information leakage or degradation of service availability. Organizations that rely on Apache ZooKeeper for their operations must prioritize remediation efforts to mitigate these risks. Users are strongly advised to upgrade to version 3.9.3, which addresses this vulnerability.
Given the high severity and potential impact of this vulnerability, organizations should prioritize patching immediately. The urgency is underscored by the nature of the attack vector, which is classified as network-based with low complexity, requiring no privileges or user interaction.
In summary, CVE-2024-51504 poses a significant threat to organizations using Apache ZooKeeper with IP-based authentication. Immediate action is required to mitigate risks associated with this vulnerability.
Vulnerability Details
The official description of CVE-2024-51504 indicates a serious flaw in the IPAuthenticationProvider used in the ZooKeeper Admin Server. The vulnerability stems from the weak default configuration for detecting the client's IP address via HTTP headers, specifically the X-Forwarded-For header, which is often used by proxy servers and can be easily spoofed. This allows an attacker to bypass authentication mechanisms, leading to potential exploitation of the Admin Server.
The CVSS score of 9.1 reflects the severity of this vulnerability, indicating a critical risk to confidentiality and availability, with high impacts on systems. The affected product is Apache ZooKeeper, specifically versions prior to 3.9.3. The vulnerability was published on November 7, 2024.
Technical Analysis
The root cause of CVE-2024-51504 lies in the configuration of the IPAuthenticationProvider. The attack vector is network-based, allowing attackers to exploit the vulnerability remotely. The attack complexity is low since it does not require any special privileges or user interaction, making it easier for attackers to execute. Successful exploitation can lead to high confidentiality impact by allowing unauthorized access to sensitive data while also posing a high availability threat due to potential service disruptions.
Risk & Impact Analysis
The deployment of Apache ZooKeeper in critical infrastructures poses a real-world risk. The potential for attackers to exploit this vulnerability can lead to unauthorized administrative control over the ZooKeeper instance, resulting in data exposure or interruptions in service availability. Given the critical nature of this vulnerability and the existing configuration issues, organizations must take immediate action to apply the provided patches to prevent exploitation.
The urgency of mitigating this vulnerability is underscored by the potential blast radius, as successful exploitation could allow attackers to execute administrative commands indiscriminately. The critical CVSS score and the nature of the vulnerability necessitate prioritization in patch cycles and remediation strategies.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of Apache ZooKeeper prior to 3.9.3 are affected by this vulnerability. Organizations using ZooKeeper must ensure they upgrade to version 3.9.3 to mitigate the risk associated with this vulnerability.
Mitigation & Remediation
To mitigate the risks associated with CVE-2024-51504, organizations should immediately upgrade to Apache ZooKeeper version 3.9.3. This version addresses the vulnerability effectively. In the absence of an immediate upgrade, organizations should consider applying configuration hardening measures to restrict access and monitor IP address usage more strictly.
For organizations seeking to validate their security posture, implementing penetration testing can provide insights into potential vulnerabilities.
Detection Guidance
Organizations should monitor logs for unusual IP addresses accessing the ZooKeeper Admin Server. Behavioral anomalies, such as unexpected command executions or access requests from atypical locations, should also be flagged for review. Implementing network signatures that detect unauthorized access attempts can further strengthen security measures.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2024-51504 highlights the ongoing need for robust security measures surrounding authentication mechanisms. As vulnerabilities like this one emerge, they underscore the importance of regular security assessments and the need for organizations to stay informed about potential weaknesses in their systems. Security teams should learn from this incident and enhance their defensive strategies to mitigate similar vulnerabilities in the future.
For further insights into improving security measures, organizations may benefit from reviewing our vulnerability management program and the importance of consistent security testing.
Additionally, understanding the trends in vulnerability exposure can enhance defensive capabilities. Our article on vulnerability exposure severity trends outlines critical patterns that organizations should consider.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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