CVE-2019-1731 Cisco NX-OS Software SSH Key Information Disclosure Vulnerability
An authenticated local attacker can expose a user's private SSH key to all authenticated users on the device via crafted CLI commands.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-1731?
CVE-2019-1731 is a medium-severity vulnerability in Cisco Nx-Os, published on 15 May 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in the SSH CLI key management functionality of Cisco NX-OS Software could allow an authenticated, local attacker to expose a user's private SSH key to all authenticated users on the targeted device. The attacker must authenticate with valid administrator device credentials. The vulnerability is due to incomplete error handling if a specific error type occurs during the SSH key export. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the CLI. A successful exploit could allow the attacker to expose a user's private SSH key. In addition, a similar type of error in the SSH key import could cause the passphrase-protected private SSH key to be imported unintentionally.
Which versions are affected by CVE-2019-1731?
It affects 1 product.
Products include Cisco Nx-Os.
How do I fix CVE-2019-1731?
No fix has been published for CVE-2019-1731 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-1731 being exploited?
There is no known exploitation of CVE-2019-1731 in the wild and no public exploit code.
Other vulnerabilities in Cisco Nx-Os
Sources
Also known as GHSA-g6jr-fq7m-6v6x.