Micro Focus GroupWise Session ID Disclosure

`# Trovent Security Advisory 2203-01 #  
#####################################  
  
  
Micro Focus GroupWise transmits session ID in URL  
#################################################  
  
  
Overview  
########  
  
Advisory ID: TRSA-2203-01  
Advisory version: 1.0  
Advisory status: Public  
Advisory URL: https://trovent.io/security-advisory-2203-01  
Affected product: Micro Focus GroupWise  
Affected version: prior to 18.4.2  
Vendor: Micro Focus, https://www.microfocus.com  
Credits: Trovent Security GmbH, Stefan Pietsch  
  
  
Detailed description  
####################  
  
Micro Focus GroupWise is a messaging software for email and personal information  
management.  
Trovent Security GmbH discovered that the GroupWise web application transmits  
the session ID in HTTP GET requests in the URL when email content is accessed.  
The exposed session ID can be recorded in the browser history of the client and  
in log files of the web server or reverse proxy server.  
A possible attacker with access to the browser history or the server log files  
is able to take control of the user session with the help of the session ID.  
  
Severity: Medium  
CVSS Score: 4.3 (CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N)  
CVE ID: CVE-2022-38756  
CWE ID: CWE-598  
  
  
Proof of concept  
################  
  
Simplified HTTP request:  
  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
GET /attachment?session=<SESSIONID>&id=... HTTP/1.1  
Host: <HOSTNAME>  
...  
X-User-Agent: GroupWise Web (18.4.0-139604)  
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~  
  
  
Solution / Workaround  
#####################  
  
The vendor released a fixed version of GroupWise.  
  
Fixed in version 18.4.2.  
  
  
History  
#######  
  
2022-03-30: Vulnerability found  
2022-08-05: Vendor contacted  
2022-10-31: Contacted vendor again  
2022-11-01: Vendor replied that the vulnerability will be investigated  
2022-11-14: Vendor contacted, asking for status  
2022-11-16: Vendor replied that a security bulletin is being prepared  
2022-12-06: Vendor published security bulletin  
2023-01-27: Advisory published  
`