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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.2015 Geutebruck G-Cam and G-Code 5 June 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Geutebruck G-Cam and G-Code Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Root Compromise -- Existing Account Cross-site Scripting -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2019-10958 CVE-2019-10957 CVE-2019-10956 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-19-155-03 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-19-155-03) Geutebruck G-Cam and G-Code Original release date: June 04, 2019 Legal Notice All information products included in http://ics-cert.us-cert.gov are provided"as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see http://www.us-cert.gov/tlp/ . 1. EXECUTIVE SUMMARY o CVSS v3 7.2 o ATTENTION: Exploitable remotely/low skill level to exploit o Vendor: Geutebruck o Equipment: G-Cam and G-Code o Vulnerabilities: Cross-site Scripting, OS Command Injection 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow remote code execution as root and remote code execution in the browser of the IP camera operator. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS Geutebruck reports that the vulnerabilities affect the following Encoder and E2 Series Camera versions and models: o G-Code: All versions 1.12.0.25 and prior EEC-2xxx o G-Cam: All versions 1.12.0.25 and prior EBC-21xx EFD-22xx ETHC-22xx EWPC-22xx 3.2 VULNERABILITY OVERVIEW 3.2.1 IMPROPER NEUTRALIZATION OF INPUT DURING WEB PAGE GENERATION ('CROSS-SITE SCRIPTING') CWE-79 A cross-site scripting vulnerability allows a remote authenticated attacker with access to event configuration to store malicious code on the server, which could later be triggered by a legitimate user resulting in code execution within the user's browser. CVE-2019-10957 has been assigned to this vulnerability. A CVSS v3 base score of 6.8 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:H/UI:R/S:U/C:H/ I:H/A:H ). 3.2.2 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN OS COMMAND ('OS COMMAND INJECTION') CWE-78 Using a specially crafted URL command, a remote authenticated user can execute commands as root. CVE-2019-10956 has been assigned to this vulnerability. A CVSS v3 base score of 7.2 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:H/UI:N/S:U/C:H/ I:H/A:H ). 3.2.3 IMPROPER NEUTRALIZATION OF SPECIAL ELEMENTS USED IN AN OS COMMAND ('OS COMMAND INJECTION') CWE-78 User input is not properly validated, which could allow a remote authenticated attacker with access to network configuration to supply system commands to the server, leading to remote code execution as root. CVE-2019-10958 has been assigned to this vulnerability. A CVSS v3 base score of 7.2 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:H/UI:N/S:U/C:H/ I:H/A:H ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Energy, Financial Services, Government Facilities, Healthcare and Public Health, Transportation Systems o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Germany 3.4 RESEARCHER Romain Luyer and Guillaume Gronnier from CEIS, and Davy Douhine from RandoriSec reported these vulnerabilities to NCCIC. 4. MITIGATIONS Geutebruck recommends users upgrade to the latest firmware, Version 1.12.13.2 or later. This can be found at the following link: https://www.geutebrueck.com/en_EN/login.html (Login Required) Geutebruck has also released a security advisory that can be found at the following link: https://portal.geutebrueck.com/ (Login Required) NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should: o Ensure the system is configured using least privilege. o Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet . o Locate control system networks and remote devices behind firewalls, and isolate them from the business network. o When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize that VPN is only as secure as the connected devices. NCCIC reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. NCCIC also provides a section for control systems security recommended practices on the ICS-CERT web page. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies . Additional mitigation guidance and recommended practices are publicly available on the ICS-CERT website in the Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies . Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to NCCIC for tracking and correlation against other incidents. NCCIC also recommends that users take the following measures to protect themselves from social engineering attacks: o Do not click web links or open unsolicited attachments in email messages. o Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams. o Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks. No known public exploits specifically target these vulnerabilities. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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