CVE-2017-18014 Cross-site scripting in n/a
Unauthenticated attackers can execute persistent XSS in the WAF log page to gain admin privileges and perform actions like creating users or enabling SSH.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2017-18014?
CVE-2017-18014 is a medium-severity cross-site scripting vulnerability in n/a, published on 12 Jan 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-79
Which versions are affected by CVE-2017-18014?
It affects 1 product.
Products include Sophos Sfos.
How do I fix CVE-2017-18014?
No fix has been published for CVE-2017-18014 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2017-18014 being exploited?
There is no known exploitation of CVE-2017-18014 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-9x6w-27m6-6fwq.