Vulnerability in Cisco Nx-Os System Software In Aci Mode
CVE-2023-20185
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.
EPSS: 0.003 (27.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Cisco Nx-os System Software In Aci Mode — versions 14.0(1h), 14.0(2c), 14.0(3d)
- Cisco Nexus_9000_in_aci_mode
- Cisco Nx-os — versions 14.2(7t), 14.2\(1j\), 15.1(1h)
Weakness classification (CWE)
References
- psirt@cisco.com (Vendor Advisory)
Frequently asked questions
- What is CVE-2023-20185?
- CVE-2023-20185 is a high-severity vulnerability in Cisco Nx-Os System Software In Aci Mode, classified under Use of Insufficiently Random Values. CVSS score: 7.4/10. Published 2023-07-12.
- How severe is CVE-2023-20185?
- High severity. CVSS v3 base score is 7.4 out of 10.