CVE-2017-6649 Command injection in Cisco Nexus Series Switches
Authenticated local attackers can inject commands into the CLI to read or write arbitrary files on Cisco Nexus switches.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2017-6649?
CVE-2017-6649 is a high-severity command injection vulnerability in Cisco Nx-Os, published on 22 May 2017. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in the CLI of Cisco NX-OS System Software 7.1 through 7.3 running on Cisco Nexus Series Switches could allow an authenticated, local attacker to perform a command injection attack. The vulnerability is due to insufficient input validation of command arguments. An attacker could exploit this vulnerability by injecting crafted command arguments into a vulnerable CLI command. An exploit could allow the attacker to read or write arbitrary files at the user's privilege level outside of the user's path. Cisco Bug IDs: CSCvb86787, CSCve60516, CSCve60555.
Which versions are affected by CVE-2017-6649?
It affects 1 product.
Products include Cisco Nx-Os.
How do I fix CVE-2017-6649?
No fix has been published for CVE-2017-6649 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2017-6649 being exploited?
There is no known exploitation of CVE-2017-6649 in the wild and no public exploit code.
Other vulnerabilities in Cisco Nx-Os
Sources
Also known as GHSA-3rhr-63q6-v875.