Medium severity · published Jan 12, 2018
CVE-2017-18014
An NC-25986 issue was discovered in the Logging subsystem of Sophos XG Firewall with SFOS before 17.0.3 MR3
6.1
CVSS
2.3%
EPSS
No
On KEV
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
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)2.3% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
Firewall · Sophos
through 17.0; 17.0; 17.0; 17.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-18014
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-18014
Mailing List
http://seclists.org/fulldisclosure/2018/Jan/24
Exploit
https://blogs.securiteam.com/index.php/archives/3612
Vendor Advisory
https://community.sophos.com/kb/en-us/128024
Vendor Advisory
https://community.sophos.com/products/xg-firewall/b/xg-blog/posts/sfos-17-0-3-mr3-released
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