Sophos Firewall Authentication Bypass (CVE-2022-1040)



Appliance Details

Sophos XG Firewall brings a fresh new approach to the way you manage your firewall, respond to threats, and monitor what’s happening on your network.


Vulnerability

Sophos Firewall could allow a remote attacker to execute arbitrary code on the system, caused by an authentication bypass vulnerability in the User Portal and Webadmin.


Identification

By sending a specially crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system.


POST /userportal/Controller?mode=8700&operation=1&datagrid=179&json={"x":"test"}

Detection

By turning this into a traffic file and matching rule, we are able to detect attempts to perform remote code execution on an affected system.


Coverage

Idappcom has created signature 8022689 for this vulnerability.


References

CVE-2022-1040

Sophos Advisory - sa-20220325-sfos-rce


Traffic IQ

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