A vulnerability in the API of Cisco Catalyst SD-WAN Manager could allow an authenticated, remote attacker to overwrite arbitrary files on the local file system. To exploit this vulnerability, the attacker must have valid read-only credentials with API access on the affected system.
This vulnerability is due to improper file handling on the API interface of an affected system. An attacker could exploit this vulnerability by uploading a malicious file on the local file system. A successful exploit could allow the attacker to overwrite arbitrary files on the affected system and gain vmanage user privileges.
Weakness
The product does not conform to the API requirements for a function call that requires extra privileges. This could allow attackers to gain privileges by causing the function to be called incorrectly.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Catalyst_sd-wan_manager | Cisco | * | 20.9.8.2 (excluding) |
| Catalyst_sd-wan_manager | Cisco | 20.11 (including) | 20.12.5.3 (excluding) |
| Catalyst_sd-wan_manager | Cisco | 20.13 (including) | 20.15.4.2 (excluding) |
| Catalyst_sd-wan_manager | Cisco | 20.16 (including) | 20.18.2.1 (excluding) |
| Catalyst_sd-wan_manager | Cisco | 20.12.6 (including) | 20.12.6 (including) |
Extended Description
When a product contains certain functions that perform operations requiring an elevated level of privilege, the caller of a privileged API must be careful to:
If the caller of the API does not follow these requirements, then it may allow a malicious user or process to elevate their privilege, hijack the process, or steal sensitive data. For instance, it is important to know if privileged APIs do not shed their privileges before returning to the caller or if the privileged function might make certain assumptions about the data, context or state information passed to it by the caller. It is important to always know when and how privileged APIs can be called in order to ensure that their elevated level of privilege cannot be exploited.