CVE-2021-25646 is a high-severity vulnerability affecting Apache Druid, specifically versions 0.20.0 and earlier. This vulnerability allows authenticated users to execute user-provided JavaScript code embedded in requests, which is a significant security risk. The ability to execute arbitrary code is particularly dangerous as it can lead to unauthorized actions being performed with the privileges of the Druid server process.
The vulnerability was published on January 29, 2021, and has a CVSS score of 8.8, indicating a high level of severity. The attack vector is network-based, with low complexity. Attackers may leverage this vulnerability to gain unauthorized access and execute malicious code, posing a risk to confidentiality, integrity, and availability.
Organizations utilizing Apache Druid should prioritize patching this vulnerability immediately. Failure to do so may result in significant risks, including data breaches and system compromises.
As of the latest updates, public exploits for this vulnerability are available, which increases the urgency for organizations to apply necessary updates and configurations to mitigate potential attacks.
Vulnerability Details
Apache Druid includes the capability for executing user-provided JavaScript code in various request types, which is intended for high-trust environments and is disabled by default. However, the vulnerability allows authenticated users to exploit this feature, enabling them to execute arbitrary code regardless of the server's configuration. The vulnerability's classification is categorized as a high-severity privilege escalation flaw.
The CVSS 3.1 score is 8.8, indicating significant risk. The impacts on confidentiality, integrity, and availability are high, reflecting the serious nature of this vulnerability.
Technical Analysis
The root cause of CVE-2021-25646 is the improper handling of user input which allows execution of JavaScript code embedded in requests. The attack vector is network-based, with low complexity. Attackers require low privileges to initiate an attack, and no user interaction is necessary. The exploit can lead to high impacts on confidentiality, integrity, and availability.
Risk & Impact Analysis
Risk to organizations includes potential unauthorized access to sensitive data and the ability for attackers to execute arbitrary code on the server, which may lead to further exploitation of the system. The blast radius for this vulnerability is significant, particularly in environments where Druid is used to manage critical data. Organizations should assess their exposure and prioritize remediation efforts accordingly.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The affected versions of Apache Druid are all versions prior to 0.20.1. Organizations should ensure they upgrade to the latest patched version to mitigate this vulnerability.
Mitigation & Remediation
Organizations should prioritize patching immediately. The recommended action is to upgrade to Apache Druid version 0.20.1 or later. In addition to applying patches, organizations should consider implementing strong access controls and monitoring to detect any unauthorized access attempts. For further assistance, organizations may consider using penetration testing services to evaluate their security posture.
Detection Guidance
To effectively detect potential exploitation of this vulnerability, organizations should monitor logs for unusual JavaScript execution attempts, unexpected server responses, and any anomalies in user behavior that could indicate an attempted exploit. Network signatures should also be updated to detect patterns consistent with the exploitation of this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2021-25646 highlights the need for rigorous security practices in the management of application servers like Apache Druid. Ensuring that user-provided code execution features are appropriately secured and monitored is crucial. Security teams should evaluate their deployment strategies to prevent similar vulnerabilities from being exploited in the future.
To deepen understanding and improve defense mechanisms, organizations are encouraged to review best practices for vulnerability management and stay updated with the latest security trends.
Additionally, security teams should consider regular penetration testing to identify and mitigate vulnerabilities before they can be exploited.
In conclusion, CVE-2021-25646 serves as a reminder of the critical importance of maintaining security best practices and being proactive in vulnerability management.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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