XSS in Sophos Sfos
CVE-2017-18014
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.023 (82.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 82.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000
Affected products
- Sophos Sfos — versions 17.0
- Sophos Xg Firewall
Weakness classification (CWE)
References
- community.sophos.com/products/xg-firewall/b/xg-blog/posts/sfos-17-0-3-mr3-relea… (Vendor Advisory)
- seclists.org/fulldisclosure/2018/Jan/24 (mailing-list, Mailing List, Third Party Advisory)
- community.sophos.com/kb/en-us/128024 (Vendor Advisory)
- blogs.securiteam.com/index.php/archives/3612 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-18014?
- CVE-2017-18014 is a medium-severity vulnerability in Sophos Sfos, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-01-12.
- How severe is CVE-2017-18014?
- Medium severity. CVSS v3 base score is 6.1 out of 10.