High [CVE-2023-20185] Cisco ACI Multi-Site CloudSec Encryption Information Disclosure Vulnerability
This high-severity Cisco advisory covers CVE-2023-20185 affecting Nexus, NX-OS System Software in ACI Mode.
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Summary
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 deprecated and removed the ACI Multi-Site CloudSec encryption feature that is affected by this vulnerability. There are no workarounds that address this vulnerability.
Affected products named by the advisory: NX-OS System Software in ACI Mode.
- Scope: This vulnerability affects Cisco Nexus 9000 Series Fabric Switches in ACI mode that are running releases 14.0 and later if they are part of a Multi-Site topology and have the CloudSec encryption feature enabled. Determine the Status of the CloudSec Feature
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Fixed versions
No fixed release is recorded yet. That does not prove no patch exists — confirm against the vendor advisory.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- There are no workarounds that address this vulnerability.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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