Cisco SD-WAN vManage Unauthenticated REST API Access Vulnerability [CVE-2023-20214]
CVE number – CVE-2023-20214
A vulnerability in the request authentication validation for the REST API of Cisco SD-WAN vManage software could allow an unauthenticated, remote attacker to gain read permissions or limited write permissions to the configuration of an affected Cisco SD-WAN vManage instance.
This vulnerability is due to insufficient request validation when using the REST API feature. An attacker could exploit this vulnerability by sending a crafted API request to an affected vManage instance. A successful exploit could allow the attacker to retrieve information from and send information to the configuration of the affected Cisco vManage instance. This vulnerability only affects the REST API and does not affect the web-based management interface or the CLI.
Cisco has released software updates that address this vulnerability.
Fixed Releases
Customers are advised to upgrade to an appropriate fixed software release as indicated in the following table(s):
| Cisco SD-WAN vManage Release | First Fixed Release |
|---|---|
| 18.3 | Not affected. |
| 18.4 | Not affected. |
| 19.1 | Not affected. |
| 19.2 | Not affected. |
| 20.1 | Not affected. |
| 20.3 | Not affected. |
| 20.4 | Not affected. |
| 20.5 | Not affected. |
| 20.6.1 | Not affected. |
| 20.6.2 | Not affected. |
| 20.6.3 | Not affected. |
| 20.6.3.1 | Not affected. |
| 20.6.3.2 | Not affected. |
| 20.6.3.3 | 20.6.3.4 |
| 20.6.4 | 20.6.4.2 |
| 20.6.5 | 20.6.5.5 |
| 20.7 | Migrate to a fixed release. |
| 20.8 | Migrate to a fixed release. |
| 20.9 | 20.9.3.2 |
| 20.10 | 20.10.1.2 |
| 20.11 | 20.11.1.2 |
There are no workarounds that address this vulnerability.
This vulnerability was found during the resolution of a Cisco TAC support case.
Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.