CVE-2018-0092 Missing authorization in Cisco NX-OS
An authenticated local attacker with network-operator role can improperly delete valid user accounts due to missing RBAC checks.
- 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-2018-0092?
CVE-2018-0092 is a high-severity missing authorization vulnerability in Cisco Nx-Os, published on 18 Jan 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability in the network-operator user role implementation for Cisco NX-OS System Software could allow an authenticated, local attacker to improperly delete valid user accounts. The network-operator role should not be able to delete other configured users on the device. The vulnerability is due to a lack of proper role-based access control (RBAC) checks for the actions that a user with the network-operator role is allowed to perform. An attacker could exploit this vulnerability by authenticating to the device with user credentials that give that user the network-operator role. Successful exploitation could allow the attacker to impact the integrity of the device by deleting configured user credentials. The attacker would need valid user credentials for the device. This vulnerability affects the following Cisco products running Cisco NX-OS System Software: Nexus 3000 Series Switches, Nexus 3600 Platform Switches, Nexus 9000 Series Switches in standalone NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules. Cisco Bug IDs: CSCvg21120.
Which versions are affected by CVE-2018-0092?
It affects 1 product.
Products include Cisco Nx-Os.
How do I fix CVE-2018-0092?
No fix has been published for CVE-2018-0092 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2018-0092 being exploited?
There is no known exploitation of CVE-2018-0092 in the wild and no public exploit code.
Other vulnerabilities in Cisco Nx-Os
Sources
Also known as GHSA-fjv2-wp8j-f9w3.