FortiOS and FortiProxy Remote Code Execution Vulnerability (CVE-2023-25610)

Dark Lab on Mar 14 2023
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FortiOS / FortiProxy - Heap buffer underflow in administrative interface

The vendor has released patches to remediate the vulnerability. Alternatively, the vendor also provided a set of temporary workarounds for

FortiOS only:

Workaround for FortiOS:

Workaround 1: Disable HTTP/HTTPS administrative interface

Workaround 2: Harden access control to administrative interface
a) Limit IP addresses that can access the administrative interface
b) Create an Address Group
c) Create Local in Policy to restrict access only to the predefined group on the management interface
d) [Optional] If using non-default ports, create appropriate service object for GUI administrative access

We advise you refer to the vendor advisory for a more verbose set of instructions to implement Workaround 2. https://www.fortiguard.com/psirt/FG-IR-23-001

https://www.fortiguard.com/psirt/FG-IR-23-001