KubePi is a K8s panel. Starting in version 1.6.3 and prior to version 1.8.0, there is a defect in the KubePi JWT token verification. The JWT key in the default configuration file is empty. Although a random 32-bit string will be generated to overwrite the key in the configuration file when the key is detected to be empty in the configuration file reading logic, the key is empty during actual verification. Using an empty key to generate a JWT token can bypass the login verification and directly take over the back end. Version 1.8.0 contains a patch for this issue.
This vulnerability allows attackers to gain unauthorized access to the KubePi backend without proper authentication mechanisms. Given the nature of the vulnerability, risk to organizations includes potential data exposure and manipulation of the backend resources.
As of now, the vulnerability is classified as medium severity with a CVSS score of 6.3. This is due to its low attack complexity and the requirement of low privileges for exploitation. Organizations should prioritize patching immediately to mitigate the risk associated with this vulnerability.
Currently, no known exploits exist for this vulnerability, and it is not included in the Known Exploited Vulnerabilities (KEV) catalog.
Vulnerability Details
The vulnerability is characterized by an empty JWT key in the default configuration file of KubePi, which enables JWT tokens to be generated without proper validation. The defect is prevalent in versions 1.6.3 to 1.8.0. The patch for this issue is present in version 1.8.0.
Technical Analysis
The root cause of this vulnerability stems from inadequate JWT token verification logic. The attack vector is network-based, requiring an attacker to interact with the KubePi service. The complexity of the attack is low, and it requires low privileges, with no user interaction required. The impact on confidentiality, integrity, and availability is classified as low.
Risk & Impact Analysis
Organizations using KubePi versions affected by this vulnerability face risks associated with unauthorized access to sensitive backend components. The potential for attackers to manipulate data or execute unauthorized commands heightens the urgency for remediation. Given the CVSS score of 6.3, organizations should address this vulnerability in their priority patch cycle.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of KubePi are versions 1.6.3 through 1.8.0. Organizations using these versions should update to version 1.8.0 or later to mitigate the vulnerability.
Mitigation & Remediation
To remediate this vulnerability, organizations should upgrade to version 1.8.0 of KubePi. If immediate patching is not possible, consider implementing network controls to restrict access to the KubePi service until the patch can be applied. Additionally, organizations should regularly review and update their security configurations to prevent similar issues in the future.
Detection Guidance
Organizations should monitor logs for abnormal authentication attempts and verify JWT token generation processes to ensure that no empty keys are being used. Behavioral anomalies in backend access patterns may indicate attempts to exploit this vulnerability.
AppSecure Threat Intelligence Insight
The KubePi vulnerability highlights the critical need for secure configuration management in software deployments. Security teams should prioritize regular audits of configuration files to ensure sensitive keys are properly set and validated. For further guidance on secure configuration practices, organizations can refer to the Application Security Checklist. Furthermore, organizations should consider adopting continuous security assessments like continuous penetration testing to proactively identify and remediate vulnerabilities. Lastly, implementing a robust vulnerability management program can ensure that all components are regularly assessed and secured.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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