CVE-2019-1808 Security feature bypass in Cisco NX-OS Software
An authenticated local administrator can bypass signature verification to install malicious patches on Cisco NX-OS switches, enabling arbitrary code execution.
- 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-2019-1808?
CVE-2019-1808 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 Image Signature Verification feature of Cisco NX-OS Software could allow an authenticated, local attacker with administrator-level credentials to install a malicious software patch on an affected device. The vulnerability is due to improper verification of digital signatures for patch images. An attacker could exploit this vulnerability by loading an unsigned software patch on an affected device. A successful exploit could allow the attacker to boot a malicious software patch image.
Weakness: CWE-347
Which versions are affected by CVE-2019-1808?
It affects 1 product.
Products include Cisco Nx-Os.
How do I fix CVE-2019-1808?
No fix has been published for CVE-2019-1808 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-1808 being exploited?
There is no known exploitation of CVE-2019-1808 in the wild and no public exploit code.
Other vulnerabilities in Cisco Nx-Os
Sources
Also known as GHSA-93w9-pxq6-2vjj.