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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.2010 Schweitzer Engineering Laboratories, Inc. Compass and AcSELerator Architect 11 July 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: SEL Compass SEL AcSELerator Architect Publisher: ICS-CERT Operating System: Windows Impact/Access: Execute Arbitrary Code/Commands -- Remote with User Interaction Modify Arbitrary Files -- Existing Account Denial of Service -- Remote with User Interaction Access Confidential Data -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2018-10608 CVE-2018-10604 CVE-2018-10600 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-18-191-02 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-18-191-02) Schweitzer Engineering Laboratories, Inc. Compass and AcSELerator Architect Original release date: July 10, 2018 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 * CVSS v3 8.2 * ATTENTION: Exploitable remotely/Low skill level to exploit/Public exploits are available for these vulnerabilities * Vendor: Schweitzer Engineering Laboratories, Inc. (SEL) * Equipment: Compass and AcSELerator Architect * Vulnerabilities: Incorrect Default Permissions, XXE, Resource Exhaustion 2. RISK EVALUATION Successful exploitation of these vulnerabilities could allow modification/ replacement of files within the Compass installation directory, disclosure of information, or denial of service. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following products from SEL are affected. Not all products are affected by all vulnerabilities. * Compass Version 3.0.5.1 and prior * AcSELerator Architect Version 2.2.24.0 and prior (ICD package Version 2.38.0) 3.2 VULNERABILITY OVERVIEW 3.2.1 INCORRECT DEFAULT PERMISSIONS CWE-276 Incorrect default permissions allows all users full access to the SEL Compass directory, which may allow modification or overwriting of files within the Compass installation folder, resulting in escalation of privilege and/or malicious code execution. CVE-2018-10604 has been assigned to this vulnerability. A CVSS v3 base score of 8.2 has been calculated; the CVSS vector string is (AV:L/AC:L/PR:L/UI:R/S:C/C:H /I:H/A:H). 3.2.2 IMPROPER RESTRICTION OF XML EXTERNAL ENTITY REFERENCE ('XXE') CWE-611 An XXE vulnerability allows unsanitized input to be passed to the AcSELerator Architect XML parser, which may allow disclosure and retrieval of arbitrary data, arbitrary code execution (in certain situations on specific platforms), and denial of service attacks. CVE-2018-10600 has been assigned to this vulnerability. A CVSS v3 base score of 8.2 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:C/C:H /I:N/A:L). 3.2.3 UNCONTROLLED RESOURCE CONSUMPTION ('RESOURCE EXHAUSTION') CWE-400 A resource exhaustion vulnerability can be exploited when the AcSELerator Architect FTP client connects to a malicious FTP server, which may cause denial of service via 100% CPU utilization. Restart of the application is required. CVE-2018-10608 has been assigned to this vulnerability. A CVSS v3 base score of 6.5 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:N /I:N/A:H). 3.3 BACKGROUND * CRITICAL INFRASTRUCTURE SECTORS: Energy * COUNTRIES/AREAS DEPLOYED: Worldwide * COMPANY HEADQUARTERS LOCATION: USA 3.4 RESEARCHER Gjoko Krstic of Applied Risk reported this vulnerability to NCCIC. 4. MITIGATIONS SEL recommends affected users upgrade to latest release: SEL Compass v3.0.6.1 or later https://selinc.com/products/compass/#tab-downloads SEL AcSELerator v2.2.29.0 (ICD 2.44.0) or later https://selinc.com/products/5032/#tab-downloads Contact SEL Support for specific instructions and downloads: https://selinc.com/support/?categories.Customer%20Service NCCIC recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should: * Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet. * Locate control system networks and remote devices behind firewalls, and isolate them from the business network. * 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. - --------------------------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 iQIVAwUBW0V8nGaOgq3Tt24GAQgzcxAAqKsF6MgDw1WLCofQEdiP97q/4mBu4H63 x3SJeIJwwdTzc98Wtkqj+t7LvJKNM7F8iD/pveiTRZC4ajhZJyhgnT+32YhUA0dG bTr2UWrYK58tw18OlNmgMN8B/NHRnW/MKmm2MDQY0IQXO40syJgjKBSYZcle8x39 f6ChL3bfQKM04J+GriHBM7eY8PsZRw+654X/2ZrL0ZZ1m3cNFFvCNV20Db/OrAl1 Ja+sMkLmMyRcs/SA6n6nx2RUShxsWLE54UxNbtfgLq9o+Blz7sARCun7VS87N8vQ eyGPs5seyiiCdj+rjm1KZuDpLJyB8Ec9TMqa9jOQtDECdH2Ffr4MLJXC2Spu3vZI /96J5IYvtzaTT0Fibb7rTPCs0UMvJRVb/+vMjbczmHWsQb2coVMheAlg5gPb/D38 Z1UaIv4rdCXBkchqbHTGFTh3hhc/bzcrKzRPZj2q0DgtSBNZRAMvJ8jKaUbrB7wF qoteG03sx40UOAadEcnL3ci3tn59xWQLnd6yO2UPR64N+ZFLC3bHKSh0Yv1MT3/R UqiAj6hv+0Akta6gkivEtsengmLBo+vJ2XmrtXQT+9ig/gwd8yNZYmW5LFEOKHdw Q07CrubCsP7YnVrjxgqjPCmNwu/0+cO9ugkOHKr9yDIR0GTmoCkgiC4ix7CemWE0 lsc2j03X6QI= =Vlvx -----END PGP SIGNATURE-----