KL-001-2020-008 : Barco wePresent Global Hardcoded Root SSH Password  
Title: Barco wePresent Global Hardcoded Root SSH Password  
Advisory ID: KL-001-2020-008  
Publication Date: 2020.11.20  
Publication URL:  
1. Vulnerability Details  
Affected Vendor: Barco  
Affected Product: wePresent WiPG-1600W  
Affected Version:,,,  
Platform: Embedded Linux  
CWE Classification: CWE-798: Use of Hard-coded Credentials  
CVE ID: CVE-2020-28334  
2. Vulnerability Description  
The Barco wePresent device has a hardcoded root password hash  
included in the firmware image. To our knowledge the password  
hash has not been cracked and published; it is possible this  
could occur at any time. This combined with KL-001-2020-004  
(CVE-2020-28329), KL-001-2020-005 (CVE-2020-28330), and  
KL-001-2020-007 (CVE-2020-28331) could be used in a simple  
and automated exploit chain to go from unauthenticated remote  
attacker to root shell.  
3. Technical Description  
In looking at the unpacked firmware, a root hash was quickly  
identified in the /etc/shadow file on the device. It is the  
only account in the /etc/shadow. The device does not prompt  
the administrator to set a new root password, therefore this  
password is hardcoded and exists across all devices.  
4. Mitigation and Remediation Recommendation  
The vendor has released an updated firmware ( which  
remediates the described vulnerability. Firmware and release  
notes are available at:  
5. Credit  
This vulnerability was discovered by Jim Becher (@jimbecher) of  
KoreLogic, Inc.  
6. Disclosure Timeline  
2020.08.24 - KoreLogic submits vulnerability details to  
2020.08.25 - Barco acknowledges receipt and the intention  
to investigate.  
2020.09.21 - Barco notifies KoreLogic that this issue,  
along with several others reported by KoreLogic,  
will require more than the standard 45 business  
day remediation timeline. Barco requests to delay  
coordinated disclosure until 2020.12.11.  
2020.09.23 - KoreLogic agrees to 2020.12.11 coordinated disclosure.  
2020.09.25 - Barco informs KoreLogic of their intent to acquire  
CVE number for this vulnerability.  
2020.11.09 - Barco shares CVE number with KoreLogic and announces  
their intention to release the updated firmware  
ahead of schedule, on 2020.11.11. Request that KoreLogic  
delay public disclosure until 2020.11.20.  
2020.11.11 - Barco firmware release.  
2020.11.20 - KoreLogic public disclosure.  
7. Proof of Concept  
After unpacking the firmware:  
$ ls -al etc/shadow  
-rwxr-xr-x 1 user user 59 May 25 00:11 etc/shadow  
$ cat etc/shadow  
The contents of this advisory are copyright(c) 2020  
KoreLogic, Inc. and are licensed under a Creative Commons  
Attribution Share-Alike 4.0 (United States) License:  
KoreLogic, Inc. is a founder-owned and operated company with a  
proven track record of providing security services to entities  
ranging from Fortune 500 to small and mid-sized companies. We  
are a highly skilled team of senior security consultants doing  
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the U.S. and around the world. We are also developers of various  
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