CVE-2019-1593 Cisco NX-OS Software Bash Shell Role-Based Access Control Bypass Privilege Escalation Vulnerability
Authenticated local attackers can bypass RBAC in Cisco NX-OS Bash shell to escalate privileges and execute restricted commands.
- 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-2019-1593?
CVE-2019-1593 is a high-severity vulnerability in Cisco Nx-Os, published on 6 Mar 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 Bash shell implementation for Cisco NX-OS Software could allow an authenticated, local attacker to escalate their privilege level by executing commands authorized to other user roles. The attacker must authenticate with valid user credentials. The vulnerability is due to the incorrect implementation of a Bash shell command that allows role-based access control (RBAC) to be bypassed. An attacker could exploit this vulnerability by authenticating to the device and entering a crafted command at the Bash prompt. A successful exploit could allow the attacker to escalate their privilege level by executing commands that should be restricted to other roles. For example, a dev-ops user could escalate their privilege level to admin with a successful exploit of this vulnerability.
Weakness: CWE-264
Which versions are affected by CVE-2019-1593?
It affects 1 product.
Products include Cisco Nx-Os.
How do I fix CVE-2019-1593?
No fix has been published for CVE-2019-1593 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-1593 being exploited?
There is no known exploitation of CVE-2019-1593 in the wild and no public exploit code.
Other vulnerabilities in Cisco Nx-Os
Sources
Also known as GHSA-r3m8-6ph3-2x9x.