CVE-2020-5902 is a critical vulnerability affecting F5 BIG-IP products, specifically in the Traffic Management User Interface (TMUI). This vulnerability allows for remote code execution (RCE) on various versions, posing severe risks to organizations. With a CVSS score of 9.8, it falls into the critical severity category, indicating that its exploitation could lead to significant impacts, including unauthorized access and control over affected systems.
The vulnerability exists in multiple versions of the BIG-IP product, including version ranges 15.0.0-15.1.0.3, 14.1.0-14.1.2.5, 13.1.0-13.1.3.3, 12.1.0-12.1.5.1, and 11.6.1-11.6.5.1. Given the nature of the vulnerability and its high severity, organizations using these versions should prioritize remediation actions.
Risk to organizations includes potential unauthorized access to sensitive data, disruption of services, and the possibility of further exploitation of connected systems. Attackers may leverage this vulnerability to execute arbitrary code remotely, which could result in a complete compromise of the affected system.
Organizations should prioritize patching immediately to mitigate this critical vulnerability. The F5 has provided patches and updates that must be applied as per their instructions to safeguard against potential exploitation.
This vulnerability has been included in the Known Exploited Vulnerabilities catalog, indicating its active exploitation in the wild. Organizations must remain vigilant and ensure that their systems are updated to the latest versions to avoid falling victim to attacks.
The urgency for defenders is underscored by the high likelihood of exploitation, as indicated by an EPSS score of 0.944, placing it in the 99.98th percentile. This high score suggests a very strong probability of exploitation in the near term, reinforcing the need for immediate action.
In summary, CVE-2020-5902 presents a critical risk to organizations using affected F5 BIG-IP versions. Immediate patching and updates are essential to protect against potential exploitation and to maintain the security of systems.
Vulnerability Details
CVE-2020-5902 allows for Remote Code Execution (RCE) in the Traffic Management User Interface of F5 BIG-IP products across several versions. The vulnerability arises from improper handling of user input, leading to arbitrary code execution in undisclosed pages. The vulnerability is classified under CWE-22, indicating a potential for directory traversal or improper validation of user input.
The CVSS score of 9.8 reflects the critical nature of this vulnerability, with a low attack complexity and no privileges required for exploitation. This means that attackers can execute the exploit without any prior authentication.
The affected versions include: BIG-IP Access Policy Manager, Advanced Firewall Manager, Advanced Web Application Firewall, and several others from version 11.6.1 up to the specified ranges. Organizations should refer to the vendor for specific patch details.
Technical Analysis
The root cause of CVE-2020-5902 lies in the Traffic Management User Interface (TMUI) of F5 BIG-IP, which fails to properly handle user input. This flaw allows an attacker to execute arbitrary code remotely, making it a significant risk for organizations relying on this product for traffic management.
The attack vector for this vulnerability is over the network, with low complexity, meaning that the technical barriers to exploiting this vulnerability are minimal. No user interaction is required, and the attack does not necessitate prior authentication, allowing attackers to exploit vulnerable systems easily.
Exploitation can lead to high impacts across confidentiality, integrity, and availability, as indicated by the CVSS vector string. Organizations must implement immediate remediation to protect their systems from these risks.
Risk & Impact Analysis
The risk to organizations affected by CVE-2020-5902 is substantial. Given that this vulnerability allows for Remote Code Execution, the potential blast radius is vast. Successful exploitation could result in an attacker gaining full control over the affected system, leading to unauthorized data access and potential manipulation.
This vulnerability has been actively exploited in the wild, as reflected in its inclusion in the Known Exploited Vulnerabilities (KEV) catalog. Organizations should consider the urgency of addressing this vulnerability, given its critical CVSS score and the potential consequences of an attack.
With an EPSS score of 0.944, indicating a high likelihood of exploitation, organizations must prioritize remediation actions. The timeline for patching should be immediate, as any delay could lead to significant security breaches and operational disruptions.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | Yes |
Affected Versions
The vulnerable versions of F5 BIG-IP include:
BIG-IP Access Policy Manager: 11.6.1 to 11.6.5.1, 12.1.0 to 12.1.5.1, 13.1.0 to 13.1.3.3, 14.1.0 to 14.1.2.5, 15.0.0 to 15.0.1.4, and 15.1.0 to 15.1.0.3.
Mitigation & Remediation
Organizations must apply the vendor's updates immediately to mitigate the risks associated with CVE-2020-5902. Specific actions include:
1. Update to the latest versions of F5 BIG-IP as instructed by the vendor.
2. Implement network segmentation to limit exposure to potential attacks.
3. Monitor logs for unusual activity that may indicate attempted exploitation.
4. Conduct regular security assessments, including penetration testing, to identify and address vulnerabilities.
Detection Guidance
Organizations should monitor their systems for the following indicators of compromise related to CVE-2020-5902:
1. Unusual outbound connections from BIG-IP interfaces.
2. Unexpected changes to system files or configurations.
AppSecure Threat Intelligence Insight
CVE-2020-5902 illustrates the critical importance of maintaining up-to-date software and the risks associated with vulnerabilities in widely utilized systems. The active exploitation in the wild highlights the necessity for organizations to implement robust security practices, including regular updates and continuous monitoring.
Security teams should prioritize understanding the attack vectors and implications of RCE vulnerabilities. The lessons learned from this incident should inform future security strategies and develop a proactive approach to vulnerability management.
To further enhance security posture, organizations are encouraged to explore comprehensive security solutions such as red teaming and application security assessments to continually test and improve the resilience of their infrastructure.
Ultimately, the proactive identification and remediation of vulnerabilities such as CVE-2020-5902 are critical to maintaining a secure operational environment.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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