Vulnerability Description
A vulnerability in the implementation of an internal file management service for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode that are running Cisco NX-OS Software could allow an unauthenticated, remote attacker to create, delete, or overwrite arbitrary files with root privileges on the device. This vulnerability exists because TCP port 9075 is incorrectly configured to listen and respond to external connection requests. An attacker could exploit this vulnerability by sending crafted TCP packets to an IP address that is configured on a local interface on TCP port 9075. A successful exploit could allow the attacker to create, delete, or overwrite arbitrary files, including sensitive files that are related to the device configuration. For example, the attacker could add a user account without the device administrator knowing.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Nx-Os | 9.3\(5\) |
| Cisco | Nexus 3000 | - |
| Cisco | Nexus 3100 | - |
| Cisco | Nexus 3100-Z | - |
| Cisco | Nexus 3100V | - |
| Cisco | Nexus 3200 | - |
| Cisco | Nexus 3400 | - |
| Cisco | Nexus 3500 | - |
| Cisco | Nexus 3600 | - |
| Cisco | Nexus 9000V | - |
| Cisco | Nexus 92160Yc-X | - |
| Cisco | Nexus 92300Yc | - |
| Cisco | Nexus 92304Qc | - |
| Cisco | Nexus 92348Gc-X | - |
| Cisco | Nexus 9236C | - |
| Cisco | Nexus 9272Q | - |
| Cisco | Nexus 93108Tc-Ex | - |
| Cisco | Nexus 93108Tc-Ex-24 | - |
| Cisco | Nexus 93108Tc-Fx | - |
| Cisco | Nexus 93108Tc-Fx-24 | - |
Related Weaknesses (CWE)
References
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-3Vendor Advisory
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-3Vendor Advisory
FAQ
What is CVE-2021-1361?
CVE-2021-1361 is a vulnerability with a CVSS score of 9.8 (CRITICAL). A vulnerability in the implementation of an internal file management service for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode that are running Cisco N...
How severe is CVE-2021-1361?
CVE-2021-1361 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2021-1361?
Check the references section above for vendor advisories and patch information. Affected products include: Cisco Nx-Os, Cisco Nexus 3000, Cisco Nexus 3100, Cisco Nexus 3100-Z, Cisco Nexus 3100V.