Platform
cisco
Component
cisco-nexus-dashboard
CVE-2022-20861 represents a critical set of vulnerabilities within Cisco Nexus Dashboard. These flaws allow an unauthenticated, remote attacker to potentially execute arbitrary commands, read or upload container image files, or launch cross-site request forgery (CSRF) attacks. The vulnerability impacts versions of Cisco Nexus Dashboard prior to a currently unavailable fixed version, requiring immediate attention and remediation.
The potential impact of CVE-2022-20861 is severe. Successful exploitation of the command execution vulnerability could grant an attacker complete control over the affected Cisco Nexus Dashboard instance. This could lead to data breaches, system compromise, and disruption of network services. The ability to read or upload container image files poses a significant risk, as attackers could potentially inject malicious code into the system. CSRF attacks could be leveraged to perform unauthorized actions on behalf of legitimate users, further expanding the attack surface. Given the critical nature of the vulnerability and the potential for remote, unauthenticated exploitation, the blast radius is substantial, potentially impacting entire network infrastructures.
CVE-2022-20861 is a high-priority vulnerability due to its critical CVSS score and the ease of exploitation (unauthenticated, remote). Public proof-of-concept exploits are likely to emerge, increasing the risk of widespread exploitation. The vulnerability was disclosed publicly on July 21, 2022. It is recommended to monitor CISA and Cisco advisories for updates and potential KEV listing.
Organizations heavily reliant on Cisco Nexus Dashboard for network management and automation are particularly at risk. Environments with exposed dashboard instances or weak access controls are especially vulnerable. Shared hosting environments where multiple tenants share the same infrastructure could also be affected, potentially leading to cross-tenant attacks.
• cisco / network-device:
Get-CimInstance -ClassName Win32_OperatingSystem | Select-Object Caption, Version• cisco / network-device:
ssh -o StrictHostKeyChecking=no <nexus_dashboard_ip> 'show version'• generic web:
curl -I <nexus_dashboard_url>• generic web:
grep -i "nexus dashboard" /var/log/apache2/access.logdisclosure
Exploit Status
EPSS
0.24% (48% percentiel)
CVSS-vector
Due to the unavailability of a fixed version at the time of publication, immediate mitigation strategies are crucial. Implement strict network segmentation to isolate Cisco Nexus Dashboard instances from untrusted networks. Employ robust access controls and authentication mechanisms to limit access to the dashboard. Consider implementing a Web Application Firewall (WAF) with rules to detect and block malicious requests targeting known vulnerable endpoints. Closely monitor system logs for suspicious activity, particularly attempts to execute commands or access container images. Until a patch is released, prioritize hardening the environment and reducing the attack surface.
Werk Cisco Nexus Dashboard bij naar de laatste beschikbare versie die door Cisco wordt geleverd. Raadpleeg het Cisco security advisory voor gedetailleerde instructies over de update en de beschikbare mitigaties.
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CVE-2022-20861 is a critical vulnerability in Cisco Nexus Dashboard allowing unauthenticated remote attackers to execute commands, read/upload container images, or perform CSRF attacks. It impacts versions prior to a currently unavailable fixed version.
If you are using Cisco Nexus Dashboard prior to a fixed version (currently unavailable), you are potentially affected. Assess your environment and implement mitigation strategies immediately.
A fixed version is currently unavailable. Implement mitigation strategies such as network segmentation, access controls, WAF rules, and log monitoring until a patch is released.
While active exploitation is not yet confirmed, the critical nature of the vulnerability and the ease of exploitation suggest a high likelihood of exploitation in the near future.
Refer to the official Cisco Security Advisory for detailed information and updates: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nexus-dashboard-multiple-vulnerabilities
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