Vulnerability identifier: #VU61634

Vulnerability risk: Critical

CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C]

CVE-ID: CVE-2022-1040

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Sophos Firewall
Hardware solutions / Security hardware applicances

Vendor: Sophos

Description

The vulnerability allows a remote attacker to compromise the affected device.

The vulnerability exists due to insufficient validation of user-supplied input in the User Portal and Webadmin. A remote attacker can send specially crafted requests to the web interface and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise the affected device.

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 - 18.5.3

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External links
http://www.sophos.com/en-us/security-advisories/sophos-sa-20220325-sfos-rce
http://support.sophos.com/support/s/article/KB-000043853?language=en_US
http://www.sophos.com/en-us/security-advisories/sophos-sa-20220907-sfos-18-5-4

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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.