CVE-2021-1361 Cisco NX-OS Software Unauthenticated Arbitrary File Actions Vulnerability
Unauthenticated remote attackers can create, delete, or overwrite arbitrary files with root privileges on Cisco Nexus switches via TCP port 9075.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-1361?
CVE-2021-1361 is a critical path traversal vulnerability in Cisco Nx-Os, published on 24 Feb 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-552
Which versions are affected by CVE-2021-1361?
It affects 1 product.
Products include Cisco Nx-Os.
How do I fix CVE-2021-1361?
No fix has been published for CVE-2021-1361 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2021-1361 being exploited?
There is no known exploitation of CVE-2021-1361 in the wild and no public exploit code.
Other vulnerabilities in Cisco Nx-Os
Sources
Also known as GHSA-9cw6-xmv9-q69p.