SB2020091116 - Overly permissive cross-domain whitelist in HMS Networks Ewon Flexy and Cosy
Published: September 11, 2020
Security Bulletin ID
SB2020091116
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Overly permissive cross-domain whitelist (CVE-ID: CVE-2020-16230)
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.
Remediation
Install update from vendor's website.