CVE-2020-8816 is a high-severity vulnerability identified in Pi-hole Web version 4.3.2, also known as AdminLTE. This vulnerability allows remote code execution by privileged dashboard users through a specially crafted DHCP static lease. The CVSS 3.1 score for this vulnerability is 7.2, indicating a high level of risk. Given the potential impact, organizations using affected versions should prioritize remediation actions.
Risk to organizations includes unauthorized access to systems and the potential for data compromise. Attackers may leverage this vulnerability to execute arbitrary code, leading to further exploitation. It is crucial for organizations to implement patches and updates as recommended by the vendor to mitigate this risk.
The urgency for defenders is high, as the vulnerability is actively monitored in the Known Exploited Vulnerabilities (KEV) catalog. Organizations should prioritize patching immediately to prevent exploitation.
As of now, known exploits exist, and there is a public proof of concept available. Monitoring for any signs of exploitation is recommended while remediation efforts are underway.
Vulnerability Details
The official description of the vulnerability states that Pi-hole Web v4.3.2 allows remote code execution by privileged dashboard users via a crafted DHCP static lease. The vulnerability is classified under CWE-78, indicating a command injection issue. The CVSS score of 7.2 reflects the high impact this vulnerability may have on confidentiality, integrity, and availability.
Affected systems include all versions of Pi-hole prior to 4.3.3. Organizations must ensure they update to the recommended version to eliminate this risk. The vulnerability was published on May 29, 2020.
Technical Analysis
The root cause of this vulnerability lies in the handling of DHCP static leases by the Pi-hole web interface. The attack vector is network-based, requiring high privileges for exploitation, and no user interaction is necessary. The attack complexity is low, making it easier for an attacker to exploit the vulnerability.
The implications of this vulnerability are significant, as successful exploitation can lead to high impact on confidentiality, integrity, and availability. Organizations must evaluate their deployment of Pi-hole and assess the potential blast radius should this vulnerability be exploited.
Risk & Impact Analysis
Organizations utilizing Pi-hole should be aware of the real-world risks posed by CVE-2020-8816. The need for swift remediation is underscored by its inclusion in the KEV catalog, indicating that it is actively exploited in the wild. The potential for unauthorized access and system compromise necessitates that organizations address this vulnerability in their immediate patch cycle.
The urgency is classified as critical due to the potential for exploitation and the high CVSS score. Organizations should ensure they have the necessary measures in place to prevent exploitation and to respond effectively should an attack occur.
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected versions include all versions of Pi-hole prior to 4.3.3. Organizations should verify their deployments and ensure they are updated to the latest version to mitigate the risks associated with this vulnerability.
Mitigation & Remediation
Organizations are advised to apply updates as instructed by the vendor. Upgrading to version 4.3.3 or later is critical in addressing this vulnerability. If patching is not immediately possible, organizations should consider implementing temporary workarounds and monitoring for unusual activity.
For further assistance, organizations can explore penetration testing services to identify and remediate similar vulnerabilities.
Detection Guidance
Organizations should monitor logs for indicators of unauthorized access attempts and any anomalies in DHCP lease requests. Behavioral anomalies or unexpected system changes should be investigated promptly.
AppSecure Threat Intelligence Insight
CVE-2020-8816 highlights the importance of secure coding practices and thorough testing of user inputs in applications. The pattern of remote code execution vulnerabilities indicates a need for security teams to implement stringent checks on data handling processes.
Security teams can benefit from developing a comprehensive vulnerability management program that encompasses all phases of application development.
Additionally, regular penetration testing should be conducted to identify and remediate vulnerabilities before they can be exploited.
The ongoing evolution of threats necessitates a proactive approach to security, including the implementation of red teaming engagements to simulate attacks and improve the organization’s defensive posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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