CVE-2021-1498 is a critical vulnerability affecting the web-based management interface of Cisco HyperFlex HX. This vulnerability allows an unauthenticated, remote attacker to perform command injection attacks against an affected device. The CVSS score of 9.8 indicates a severe risk to organizations, as it can lead to unauthorized command execution, compromising the confidentiality, integrity, and availability of the system. Given the nature of this vulnerability, organizations should prioritize patching immediately to mitigate potential risks. The vulnerability was published on May 6, 2021, and has been analyzed thoroughly by Cisco.
The risk to organizations includes the potential for attackers to gain control over affected devices, leading to further exploitation or data breaches. As the attack vector is network-based and requires no authentication, the likelihood of exploitation is notably high.
Currently, there are no known public exploits available for this vulnerability. However, organizations should remain vigilant and monitor their systems for any signs of attempted exploitation. The urgency for remediation is critical, and organizations are advised to apply updates as per vendor instructions.
In summary, CVE-2021-1498 poses a significant threat to the security of Cisco HyperFlex HX installations. Organizations must act promptly to protect their infrastructure from potential attacks.
Vulnerability Details
The Cisco HyperFlex HX data platform has multiple vulnerabilities that can be exploited through its web-based management interface. The vulnerabilities are classified under CWE-78 (OS Command Injection) and CWE-77 (Command Injection). The CVSS score of 9.8 is derived from characteristics such as a network attack vector, low attack complexity, and no required privileges or user interaction.
Technical Analysis
The root cause of this vulnerability stems from insufficient input validation within the Cisco HyperFlex HX Installer Virtual Machine. Attackers may leverage this weakness to execute arbitrary commands on the device, specifically as the tomcat8 user. The attack complexity is low, and no privileges are required, making this vulnerability particularly dangerous.
Risk & Impact Analysis
The real-world risk associated with CVE-2021-1498 is substantial. Given its critical severity, the potential blast radius could impact numerous organizations utilizing Cisco HyperFlex HX. An attacker exploiting this vulnerability could gain full control over affected devices, leading to data breaches and significant operational disruption.
Organizations should assess their exposure to this vulnerability, particularly in environments where Cisco HyperFlex HX is deployed. The urgency assessment is critical, and immediate action is required to apply necessary updates.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
All versions of the Cisco HyperFlex HX data platform prior to the vendor patch are affected. Specifically, versions before 4.0(2e) and those starting from 4.5 but before 4.5(2a) are vulnerable.
Mitigation & Remediation
To remediate this vulnerability, organizations should apply the latest patches provided by Cisco. For detailed instructions, refer to the vendor advisory. If updates cannot be applied immediately, consider implementing network segmentation to limit exposure of vulnerable devices. Continuous monitoring and logging of network traffic to and from affected devices can help identify any anomalous activities indicative of exploit attempts.For further guidance, organizations can refer to the penetration testing services to validate their remediation efforts.
Detection Guidance
Organizations should monitor log files for unusual command execution patterns and unexpected user activity. Additionally, network signatures that identify command injection attempts can be valuable in detecting potential exploitation attempts. Behavioral anomalies in device performance may also indicate an ongoing exploitation of this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2021-1498 underscores the critical nature of input validation in web-based management interfaces. As organizations increasingly rely on cloud and hyper-converged infrastructures, vulnerabilities of this nature will likely become more prevalent.
Security teams should leverage this incident as a learning opportunity to enhance their security posture. Consider adopting a proactive approach to security by incorporating regular penetration testing and vulnerability assessments into their security lifecycle.
For more insights on secure infrastructure management, organizations can explore our penetration testing methodology and the importance of a comprehensive vulnerability management program to stay ahead of emerging threats.
Additionally, organizations should review their incident response plans to ensure readiness against potential future exploitation attempts.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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