Fortinet revealed on Monday that a recently patched critical security vulnerability affecting its firewall and proxy products is being actively exploited in the wild.
The flaw, identified as CVE-2022-40684 (CVSS score: 9.6), concerns an authentication bypass in FortiOS, FortiProxy, and FortiSwitchManager that could allow a remote attacker to perform unauthorised operations on the administrative interface via specially crafted HTTP(S) requests.
"Fortinet is aware of an instance where this vulnerability was exploited, and recommends immediately validating your systems against the following indicator of compromise in the device's logs: user='Local_Process_Access,'" the company noted in an advisory.
The list of impacted devices is below -
- FortiOS version 7.2.0 through 7.2.1
- FortiOS version 7.0.0 through 7.0.6
- FortiProxy version 7.2.0
- FortiProxy version 7.0.0 through 7.0.6
- FortiSwitchManager version 7.2.0, and
- FortiSwitchManager version 7.0.0
Updates have been released by the security company in FortiOS versions 7.0.7 and 7.2.2, FortiProxy versions 7.0.7 and 7.2.1, and FortiSwitchManager version 7.2.1.
The security firm has released updates for FortiOS versions 7.0.7 and 7.2.2, FortiProxy versions 7.0.7 and 7.2.1, and FortiSwitchManager version 7.2.1.
The announcement comes just days after Fortinet sent "confidential advance customer communications" to its customers, urging them to install patches to prevent potential attacks exploiting the flaw.
If updating to the latest version is not an option, users should disable the HTTP/HTTPS administrative interface, or alternatively limit IP addresses that can access the administrative interface.
