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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.2349 Advisory (icsa-19-178-04) SICK MSC800 28 June 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: SICK MSC800 Publisher: ICS CERT Operating System: Network Appliance Impact/Access: Increased Privileges -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-10979 Original Bulletin: https://www.us-cert.gov/ics/advisories/icsa-19-178-04 - --------------------------BEGIN INCLUDED TEXT-------------------- ICS Advisory (ICSA-19-178-04) SICK MSC800 Original release date: June 27, 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 9.8 o ATTENTION: Exploitable remotely/low skill level to exploit o Vendor: SICK o Equipment: MSC800 o Vulnerability: Use of Hard-coded Credentials 2. RISK EVALUATION Successful exploitation of this vulnerability could allow a low-skilled remote attacker to reconfigure settings and/or disrupt the functionality of the device. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of MSC800, a programmable logic controller, are affected: o MSC800 all versions prior to Version 4.0 3.2 VULNERABILITY OVERVIEW 3.2.1 USE OF HARD-CODED CREDENTIALS CWE-798 The affected firmware versions contain a hard-coded customer account password. CVE-2019-10979 has been assigned to this vulnerability. A CVSS v3 base score of 9.8 has been calculated; the CVSS vector string is ( AV:N/AC:L/PR:N/UI:N/S:U/ C:H/I:H/A:H ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS: Critical Manufacturing o COUNTRIES/AREAS DEPLOYED: Worldwide o COMPANY HEADQUARTERS LOCATION: Germany 3.4 RESEARCHER Tri Quach of Amazon's Customer Fulfillment Technology Security (CFTS) group reported this vulnerability to NCCIC. 4. MITIGATIONS SICK recommends affected users upgrade to the latest firmware version (v4.0). The patch and installation procedure for the firmware update is available from the responsible SICK representative. Until the firmware update is installed, general security practices should be utilized. In case the referenced patches cannot be applied, the following general security practices could mitigate the associated risk. For more information SICK has released a security notification that can be found at: https://www.sick.com/de/en/service-and-support/ the-sick-product-security-incident-response-team-sick-psirt/w/psirt/#advisories NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should: o Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet . o Blocking/Monitoring Ports TCP/2111 or TCP/2112 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. No known public exploits specifically target this vulnerability. For any questions related to this report, please contact the NCCIC at: Email: NCCICCUSTOMERSERVICE@hq.dhs.gov Toll Free: 1-888-282-0870 The NCCIC continuously strives to improve its products and services. You can help by choosing one of the links below to provide feedback about this product. - --------------------------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 firstname.lastname@example.org 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: email@example.com 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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXRVr82aOgq3Tt24GAQgdlQ//cCC265UbQzmhQ8Wl0gInRkRTya9iC+OS j9tdF3hvGw3Wtl+vnQCygt12Ak9v51+4E2RZq7BhsUDM63tZtc8pL9rYXgn2qhsq le6wPIjjC8ayd5MkkMN57uuevQ1r/t0xICkzfkFR7BEFusGDc9Dmhqp57j+VBkSf MjLbjpjsXmAzxXNqIGC8AtYNgmy+LZakg+i1aBe4ft72OEHc9EaqtUCnE3+j4dvO lCE6uOUshGV6AYG/ahGt+vtLELJbjEt4GXp3d2RPbFI+1GGWn4pgHPCMYkt643s8 d10X89/JfwKnXGwkFTUweAsubsA6Uc2gUrI9lTbk/kVmZSLRK2uP/NuEkD/xNrIP FUa8DfvoZZ04TC19jD/hRd0gVy4MJx4EVc93DnSHS64UrwHs9ruq3lLt6UYAnViE mOMkj89QSKXK36KqFP161V3rlEpHwkFYUO4G+fVI1luQN7elopfxp3FTHiHNEi7v uhPa+iWx358yYmUBJenr6+FlK+8q5dNLZWAzPO/MMPCgNg6yVPfDxiWEFcCsWPMd DPkf4YOR1tM3nLkb//71+kCX4sDvF8Md/1Y4MOCIIQXI6uP6Zuuv/P5R+WSv0aq3 td2NNb9zYjCIxSMU0RM7BZHUskN3W1VTUAB3A9ZS9S+NAS1qr6Ue9TD2u8Ykb5Pk RzEGfUlYGBY= =UbGk -----END PGP SIGNATURE-----