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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2019.2095 Advisory (ICSA-19-162-01) Siemens Siveillance VMS 12 June 2019 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Siemens Siveillance VMS Publisher: ICS-CERT Operating System: Windows Impact/Access: Reduced Security -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2019-6582 CVE-2019-6581 CVE-2019-6580 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-19-162-01 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-19-162-01) Siemens Siveillance VMS Original release date: June 11, 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 8.8 o ATTENTION: Exploitable remotely/low skill level to exploit o Vendor: Siemens o Equipment: Siveillance VMS o Vulnerabilities: Improper Authorization, Incorrect User Management, Missing Authorization 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow an attacker with network access to Port 80/TCP to change device properties, user roles, and user-defined event properties. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of Siveillance VMS are affected: o 2017 R2 all versions prior to v11.2a o 2018 R1 all versions prior to v12.1a o 2018 R2 all versions prior to v12.2a o 2018 R3 all versions prior to v12.3a o 2019 R1 all versions prior to v13.1a 3.2 VULNERABILITY OVERVIEW 3.2.1 IMPROPER AUTHORIZATION CWE-285 An attacker with network access to Port 80/TCP could change device properties without authorization. CVE-2019-6580 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:N/S:U/C:H/ I:H/A:H ). 3.2.2 INCORRECT USER MANAGEMENT CWE-286 An attacker with network access to Port 80/TCP could change user roles without proper authorization. CVE-2019-6581 has been assigned to this vulnerability. A CVSS v3 base score of 8.8 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:N/S:U/C:H/ I:H/A:H ). 3.2.3 MISSING AUTHORIZATION CWE-862 An attacker with network access to Port 80/TCP can change user-defined event properties without proper authorization. CVE-2019-6582 has been assigned to this vulnerability. A CVSS v3 base score of 7.1 has been assigned; the CVSS vector string is ( AV:N/AC:L/PR:L/UI:N/S:U/C:N/ I:H/A:L ). 3.3 BACKGROUND o CRITICAL INFRASTRUCTURE SECTORS : Critical Manufacturing, Commercial Facilities o COUNTRIES/AREAS DEPLOYED : Worldwide o COMPANY HEADQUARTERS LOCATION : Germany 3.4 RESEARCHER Siemens PSIRT reported these vulnerabilities to NCCIC. 4. MITIGATIONS Siemens has released the following updates to the Siveillance VMS products: o 2017 R2 v11.2a o 2018 R1 v12.1a o 2018 R2 v12.2a o 2018 R3 v12.3a o 2019 R1 v13.1a Updates can be found at: https://support.industry.siemens.com/cs/ww/en/ps/24899/dl Siemens also recommends applying the following specific mitigation to reduce risk: o Block Port 80/TCP at an external firewall. For more information please see Siemens security advisory SSA-212009. NCCIC recommends users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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 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 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. 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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). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBXQCOuGaOgq3Tt24GAQghLRAAk33ZlnJ4gouMyZrr9wfBhMPjA8+PCSDH eW9WhKzTdOWUzTOUH9mTuacs9awKr22d+GR74pCJvxiL6+qfBMCjRBlFMuv775OZ 1qlZR3moqQN1YvzTPF1t10Xl+MjTuHV34/KDtgrWqlzPBWd0hQEePE/lKe9mTZAV 1X5Jnevz4wBbn1fi4vmnK181+QaGd6qBU3zXA3X0jkvk1iSr4TOTVdBtYtYuXSde H7FzvPNczI0KcJZIYOrwzFFHS6xsnr/DXaCiXZVfC2aB3uzHUEFevxPRuAILdYXl VYX9c4QSkRdtv8znUxlrwQ/UCKQjBA2jTvQMKQU8U9g8n9U4p32d+gjxHJHG3vLS 0jz/HeUK+GwL8pFRK11JplIMWGnijprUfzM4WFqYymIqti/06qickTxoyTwo2TGT Yl7i2Sxcq6nOC1xoYi0Rpb24g5h4GFCME3DR2go7un9Q4A1mlB7sr9PAV0OMqij+ A+2MBBPUVrQNBQgd/GIqLw7qzyESnYC3jUfvj4+jouJxFZxm+oIlaTeQJKpHe10a iKx4PEIoYUgFuDCKiSiBj/S9J/anIrirXsdtXbaCdXsG/ytybrT28jUP0jGVFI1V 0J8Vn97qRlywvnJOynKu8A4f/aPHadm8IAjshbfw/7A2TG92DX67PtBciuAvn4xu EUgS7mAyYHk= =psz+ -----END PGP SIGNATURE-----