CVE-2023-34468 is a high-severity vulnerability affecting Apache NiFi versions 0.0.2 through 1.21.0. This vulnerability allows an authenticated and authorized user to configure a Database URL with the H2 driver, which can enable custom code execution. The impact is significant, as it could lead to unauthorized access and control over the system.
The CVSS score of 8.8 indicates a high severity level, highlighting the urgency for organizations to address this vulnerability. The attack vector is network-based with low complexity, requiring only low privileges and no user interaction. Risk to organizations includes potential data breaches, integrity compromises, and loss of availability.
Organizations should prioritize patching immediately. The resolution for this vulnerability involves validating the Database URL and rejecting H2 JDBC locations. Upgrading to version 1.22.0 or later is strongly recommended to mitigate this risk.
Currently, there is no public exploit confirmed for this vulnerability, but the potential for exploitation remains high. Security teams should remain vigilant and monitor their systems for unusual activities that could indicate exploitation attempts.
Vulnerability Details
The DBCPConnectionPool and HikariCPConnectionPool Controller Services in Apache NiFi versions 0.0.2 through 1.21.0 are susceptible to this vulnerability. The official CVE description states that it allows an authenticated and authorized user to configure a Database URL with the H2 driver that enables custom code execution.
According to the CVSS v3.1 metrics, the attack vector is network-based, complexity is low, and the privileges required are low. The vulnerability has a high impact on confidentiality, integrity, and availability.
The vulnerability was published on June 12, 2023, and is classified under CWE-94: Improper Control of Generation of Code ('Code Injection').
Technical Analysis
The root cause of this vulnerability is the lack of validation for Database URLs that utilize the H2 driver. This oversight allows attackers to execute arbitrary code by configuring specific Database URLs. The attack vector is network-based, and the attack complexity is low, making it easier for malicious actors to exploit this vulnerability.
The privileges required are low, meaning that an authenticated user can initiate the attack without requiring elevated permissions. No user interaction is necessary, which further increases the risk of this vulnerability being exploited in the wild.
The impact of a successful exploitation includes high confidentiality, integrity, and availability impacts, potentially leading to unauthorized access, data breaches, and service disruptions.
Risk & Impact Analysis
Organizations using affected versions of Apache NiFi are at significant risk due to this vulnerability. The ability for an authenticated user to execute arbitrary code poses a serious threat to the integrity and security of the application and its underlying data.
The blast radius of this vulnerability could extend to all systems utilizing the affected components, leading to a widespread impact if exploited. This vulnerability underscores the importance of maintaining rigorous security practices, including regular updates and patch management.
With an EPS score of 0.772, placing it in the 99th percentile, the likelihood of exploitation is deemed high. Organizations must assess their risk posture and prioritize this vulnerability in their remediation efforts.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of Apache NiFi from 0.0.2 through 1.21.0 are affected by this vulnerability. Organizations are advised to upgrade to version 1.22.0 or later to mitigate this issue.
Mitigation & Remediation
To mitigate this vulnerability, organizations should upgrade to Apache NiFi version 1.22.0 or later. If an upgrade is not immediately possible, configuration changes should be implemented to restrict the use of H2 JDBC locations in Database URLs. Regular monitoring of network traffic and application logs should also be instituted to detect any unauthorized access attempts.
For organizations seeking to validate their security posture, engaging in penetration testing services is a recommended approach.
Detection Guidance
Organizations should monitor for unusual log entries that may indicate attempts to exploit this vulnerability. Key indicators include unexpected database connection requests or configuration changes within the DBCPConnectionPool and HikariCPConnectionPool services.
AppSecure Threat Intelligence Insight
The significance of CVE-2023-34468 lies in its demonstration of how misconfigurations can lead to severe vulnerabilities in widely used software. As organizations increasingly rely on automated services like Apache NiFi, the need for robust configuration management practices becomes paramount.
This vulnerability highlights the continuing trend of attackers exploiting configuration errors. Security teams should implement comprehensive security reviews and audits of their configurations to prevent similar vulnerabilities.
For further reading on configuration management and security practices, consider reviewing the following resources: penetration testing methodology and vulnerability management program design for strategic insights.
In conclusion, CVE-2023-34468 serves as a critical reminder of the persistent threats organizations face and the importance of proactive security measures.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
.webp)