Vulnerability identifier: #VU67624

Vulnerability risk: Critical

CVSSv3.1: 9.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2022-3236

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Sophos Firewall
Hardware solutions / Security hardware applicances

Vendor: Sophos

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in the User Portal and Webadmin interfaces of Sophos Firewall. A remote non-authenticated attacker can send a specially crafted request and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Note, the vulnerability is being actively exploited in the wild.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Sophos Firewall: 17.0.0 - 19.0.1

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External links
http://www.sophos.com/en-us/security-advisories/sophos-sa-20220923-sfos-rce

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

Yes. This vulnerability is being exploited in the wild.