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Micro Focus GroupWise Session ID Disclosure

Micro Focus GroupWise Session ID Disclosure
Posted Jan 27, 2023
Authored by Stefan Pietsch | Site trovent.io

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. Versions prior to 18.4.2 are affected.

tags | exploit, web
advisories | CVE-2022-38756
SHA-256 | 45d877f2bc8d1d68f308fad7fe918c90f982d284964eee41b93805a3c6fb1ad2

Micro Focus GroupWise Session ID Disclosure

Change Mirror Download
# 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
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