Zero-day vulnerability in Sophos Firewall

SQL injection

The vulnerability exploitation was detected on April 22, 2020. Malware dubbed Asnarök used SQL injection vulnerability to compromise the affected devices and steal users' credentials.

Known malware:


Vulnerability details

Advisory: SB2020042601 - SQL injection in Sophos XG Firewall/SFOS

Vulnerable component: Sophos Firewall

CVE-ID: CVE-2020-12271

CVSSv3 score: 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

CWE-ID: CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')


The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to insufficient sanitization of user-supplied data passed to the User Portal or Admin interfaces. A remote non-authenticated attacker can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.

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