Overly permissive cross-domain whitelist in eWON Flexy and eWON Cosy - CVE-2020-16230
Published: September 11, 2020
Vulnerability identifier: #VU46657
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2020-16230
CWE-ID: CWE-942
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: HMS Networks
Affected software:
eWON Flexy
eWON Cosy
eWON Flexy
eWON Cosy
Detailed vulnerability description
The vulnerability allows a local user to bypass the CORS protection mechanism.
The vulnerability exists due to incorrect processing of the "Origin" HTTP header that is supplied within HTTP request. A local administrator can supply arbitrary value via the "Origin" HTTP header, bypass implemented CORS protection mechanism and retrieve limited confidential information through sniffing.
How to mitigate CVE-2020-16230
Install updates from vendor's website.