CVE-2021-22010 is a high-severity denial-of-service vulnerability affecting VMware vCenter Server. This vulnerability allows a malicious actor with network access to port 443 on the vCenter Server to exploit the VPXD service, potentially resulting in a denial of service condition due to excessive memory consumption. The vulnerability has a CVSS score of 7.5, indicating that it poses a significant risk to organizations that utilize VMware products.
Risk to organizations includes service disruptions, which can significantly impact operations and availability. Attackers may leverage this vulnerability to incapacitate the vCenter Server by overwhelming the VPXD service, leading to downtime and potential financial losses. Organizations should prioritize patching immediately to mitigate this risk.
As of the latest updates, no known exploits are confirmed in the wild, but the vulnerability's existence and its exploitability mean that security teams should be vigilant. The urgency for defenders lies in the potential for exploitation in scenarios where attackers have network access. Organizations should address this vulnerability in the priority patch cycle.
Organizations using affected versions of VMware products, specifically the vCenter Server and cloud foundation, should take immediate action to apply the necessary patches to rectify this vulnerability. The potential availability impact is categorized as high, emphasizing the critical nature of this issue.
Vulnerability Details
The vCenter Server contains a denial-of-service vulnerability in the VPXD service. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to create a denial-of-service condition due to excessive memory consumption by the VPXD service. The vulnerability has a CVSS score of 7.5 and is classified under CWE-400.
Technical Analysis
The root cause of this vulnerability lies in the VPXD service's inability to manage memory effectively when subjected to certain network requests. The attack vector is network-based, meaning that no local access is required for an attacker to exploit this vulnerability. The complexity of the attack is low, as it does not require any privileged access or user interaction.
This vulnerability has a high impact on availability, as successful exploitation can lead to service outages. However, there are no impacts on confidentiality or integrity, making this a denial-of-service type vulnerability.
Risk & Impact Analysis
The real-world deployment risk associated with CVE-2021-22010 is significant, particularly for organizations relying on VMware vCenter Server for their operations. The blast radius potential is considerable, as a successful denial of service can disrupt not only the vCenter Server itself but potentially the entire virtual infrastructure it manages.
Given the high CVSS score and the reported exploitability, organizations should prioritize addressing this vulnerability in their patch management processes. The absence of public exploits does not indicate safety; rather, it underscores the need for vigilance and proactivity in applying the recommended patches.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
This vulnerability affects multiple versions of VMware products, including cloud foundation from version 3.0 to prior to 5.0, and vCenter Server versions 6.7 and 7.0. Organizations should ensure they are running the latest patched versions.
Mitigation & Remediation
Organizations should apply the patches provided by VMware to remediate this vulnerability. The patches are available in the vendor advisory. For detailed guidance on applying these patches and ensuring that your systems are secure, organizations can refer to the penetration testing services offered by AppSecure.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual network activity involving the VPXD service. Behavioral anomalies, such as sudden spikes in memory usage or service crashes, should be investigated promptly.
AppSecure Threat Intelligence Insight
CVE-2021-22010 highlights the ongoing challenges organizations face in securing their network services. The presence of unpatched vulnerabilities like this one can be a gateway for potential disruptions. Security teams should consider adopting a proactive approach by implementing a vulnerability management program that includes regular assessments and timely patching.
In addition, understanding the trends represented by such vulnerabilities can help inform better security practices. Awareness of how vulnerabilities are exploited can lead to improved defenses against future threats. For more insights, organizations should explore our penetration testing methodology to strengthen their security posture.
Finally, organizations should engage in continuous monitoring and assessment of their security environments to ensure they remain resilient against evolving threats. Regular reviews of security controls and incident response plans are essential to maintaining a robust defense.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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