CVE-2017-18014

Public Exploit

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.

Category

6.1
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.16%
Vendor Advisory sophos.com Vendor Advisory sophos.com
Affected: n/a n/a
Published at:
Updated at:

References

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

Frequently Asked Questions

What is the severity of CVE-2017-18014?
CVE-2017-18014 has been scored as a medium severity vulnerability.
How to fix CVE-2017-18014?
To fix CVE-2017-18014, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-18014 being actively exploited in the wild?
It is possible that CVE-2017-18014 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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