CVE-2023-45859 is a high-severity vulnerability in Hazelcast that affects versions up to 4.1.10, 4.2 through 4.2.8, 5.0 through 5.0.5, 5.1 through 5.1.7, 5.2 through 5.2.4, and 5.3 through 5.3.2. This vulnerability allows authenticated users to access data stored in the cluster due to improper permission checks in some client operations. With a CVSS score of 7.6, the implications of this vulnerability are significant, making its resolution critical for organizations using Hazelcast.
The risk to organizations includes unauthorized access to sensitive data, which can lead to further exploitation and data breaches. As such, organizations should prioritize patching immediately. Given the nature of the vulnerability, it is essential for security teams to assess their current configurations and implement the necessary updates to safeguard their environments.
The vulnerability was published on February 28, 2024, and has been analyzed thoroughly. It is important to note that there are no known exploits or public proof of concepts available at this time, although the potential impact remains high due to the classification of the vulnerability. Organizations using affected versions of Hazelcast must take this threat seriously.
To mitigate risks associated with CVE-2023-45859, organizations should ensure they are running the latest versions of Hazelcast. The remediation for this vulnerability is considered a high priority, and timely updates are essential.
Vulnerability Details
The official description states that in Hazelcast through 4.1.10, 4.2 through 4.2.8, 5.0 through 5.0.5, 5.1 through 5.1.7, 5.2 through 5.2.4, and 5.3 through 5.3.2, some client operations don't check permissions properly. This oversight allows authenticated users to access data stored in the cluster unexpectedly.
This vulnerability has been classified under CWE-922, which denotes issues related to inadequate permission checks. The CVSS score of 7.6 indicates a high severity level, suggesting that the potential for exploitation is significant, especially considering that it can be exploited over a network with low attack complexity and requires low privileges.
The confidentiality impact is rated as high, meaning sensitive data can be exposed. Integrity and availability impacts are rated as low, indicating that while data exposure is a concern, the overall system stability is not significantly jeopardized.
Technical Analysis
The root cause of this vulnerability stems from inadequate permission checks within Hazelcast's client operations. This flaw enables authenticated users to bypass restrictions and access sensitive data that should otherwise remain protected.
The attack vector is classified as network-based, meaning that an attacker does not need physical access to the devices but can exploit this vulnerability over the network. The attack complexity is rated as low, allowing attackers to exploit the vulnerability without sophisticated techniques.
Privileges required to exploit this vulnerability are low, meaning that an attacker only needs to be an authenticated user. User interaction is not necessary, which further increases the risk as potential attackers can act without needing to engage the target in any way.
The confidentiality impact is high, allowing attackers to potentially view sensitive data. The integrity impact is low, suggesting that while data may be accessed, it is not likely to be altered, and the availability impact is also low, indicating that service operations are not significantly disrupted.
Risk & Impact Analysis
The deployment risk associated with CVE-2023-45859 is substantial due to the nature of the vulnerability. Organizations utilizing affected versions of Hazelcast face the possibility of unauthorized access to sensitive data. The blast radius potential is considerable, as the data accessed could include critical information, leading to data breaches or compliance violations.
Organizations should assess their environments and prioritize remediation efforts based on the CVSS score, which indicates a high urgency for patching. Given that the vulnerability is not actively exploited in the wild and lacks public proof of concept, organizations have a window to address this issue effectively.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of Hazelcast include all versions prior to vendor patch, specifically: 4.1.10 and 4.2.0 to 4.2.8, 5.0.0 to 5.0.5, 5.1.0 to 5.1.7, 5.2.0 to 5.2.4, and 5.3.0 to 5.3.2.
Mitigation & Remediation
To mitigate this vulnerability, organizations should upgrade to the latest version of Hazelcast. If a patch is not available, consider implementing strict network controls to limit access to the Hazelcast cluster. Regularly monitor for unusual access patterns and consider implementing configuration hardening practices to enhance security.
For further details on security validation, organizations may find value in conducting a comprehensive penetration testing exercise to identify potential weaknesses.
Detection Guidance
Organizations should monitor logs for any unauthorized access attempts and analyze behavioral anomalies that may suggest exploitation of this vulnerability. Implementing network signatures specific to Hazelcast operations can also be beneficial in detecting any suspicious activity.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2023-45859 lies in its demonstration of the importance of robust permission checks within distributed systems. As organizations continue to rely on Hazelcast for data storage and processing, the potential for data exposure highlights the need for stringent security practices.
This vulnerability represents a critical pattern in security failures related to inadequate access controls. Security teams should take this as a lesson to enhance their validation processes and ensure that all components are scrutinized for proper security measures.
Organizations should also consider leveraging resources such as the penetration testing methodology and the vulnerability management program to further strengthen their defenses.
Ultimately, the strategic takeaway is to foster a security-first culture that prioritizes proactive measures against potential vulnerabilities, ensuring that systems are robust and resilient against emerging threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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