CVE-2017-18014 Information

Description

An NC-25986 issue was discovered in the Logging subsystem of Sophos XG Firewall with SFOS before 17.0.3 MR3. An unauthenticated user can trigger a persistent XSS vulnerability found in the WAF log page (Control Center - Log Viewer - in the filter option \Web Server Protection) in the webadmin interface and execute any action available to the webadmin of the firewall (e.g. creating a new user enabling SSH or adding an SSH authorized key). The WAF log page will execute the \User-Agent\ parameter in the HTTP POST request.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Reference

http://seclists.org/fulldisclosure/2018/Jan/24 https://blogs.securiteam.com/index.php/archives/3612 https://community.sophos.com/kb/en-us/128024 https://community.sophos.com/products/xg-firewall/b/xg-blog/posts/sfos-17-0-3-mr3-released

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

6.1