CVE-2023-20185 Weak cryptography in Cisco NX-OS System Software in ACI Mode
An on-path attacker can break weak encryption to read or modify intersite traffic on Cisco Nexus 9000 switches in ACI mode.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-20185?
CVE-2023-20185 is a high-severity vulnerability in Cisco Nx-Os, published on 12 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A vulnerability in the Cisco ACI Multi-Site CloudSec encryption feature of Cisco Nexus 9000 Series Fabric Switches in ACI mode could allow an unauthenticated, remote attacker to read or modify intersite encrypted traffic. This vulnerability is due to an issue with the implementation of the ciphers that are used by the CloudSec encryption feature on affected switches. An attacker with an on-path position between the ACI sites could exploit this vulnerability by intercepting intersite encrypted traffic and using cryptanalytic techniques to break the encryption. A successful exploit could allow the attacker to read or modify the traffic that is transmitted between the sites. Cisco has not released and will not release software updates that address this vulnerability.
Which versions are affected by CVE-2023-20185?
It affects 1 product.
Products include Cisco Nx-Os.
How do I fix CVE-2023-20185?
No fix has been published for CVE-2023-20185 yet. Limit exposure of the affected software until one is available.
Is CVE-2023-20185 being exploited?
There is no known exploitation of CVE-2023-20185 in the wild and no public exploit code.
Other vulnerabilities in Cisco Nx-Os
Sources
Also known as GHSA-jpfv-6q3x-wx9f.