26 April 2017
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.1038 Sierra Wireless AirLink Raven XE and XT 26 April 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Sierra Wireless AirLink Raven XE and XT Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Access Privileged Data -- Remote/Unauthenticated Cross-site Request Forgery -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2017-6046 CVE-2017-6044 CVE-2017-6042 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-17-115-02 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-17-115-02) Sierra Wireless AirLink Raven XE and XT Original release date: April 25, 2017 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/. CVSS v3 10.0 ATTENTION: Remotely exploitable/low skill level to exploit. Public exploits are available. Vendor: Sierra Wireless Equipment: AirLink Raven XE and XT Vulnerabilities: Improper Authorization, Cross-Site Request Forgery, Insufficiently Protected Credentials REPOSTED INFORMATION This advisory is a follow-up to the alert titled ICS-ALERT-16-182-01 Sierra Wireless AirLink Raven XE and XT Gateway Vulnerabilities that was published June 30, 2016, on the NCCIC/ICS-CERT web site. AFFECTED PRODUCTS The following Sierra Wireless gateways are affected: AirLink Raven XE, all versions prior to 4.0.14, and AirLink Raven XT, all versions prior to 4.0.11. IMPACT Successful exploitation of these vulnerabilities may allow a remote attacker to perform unauthorized sensitive functions compromising the confidentiality, integrity, and availability of the affected system. MITIGATION Sierra Wireless has released new firmware versions to address the forced browsing and cross-site request forgery vulnerabilities. Sierra Wireless reports that the insufficiently protected credentials vulnerability will not be addressed. Sierra Wirelesss Raven XE firmware Version 4.0.14, is available at the following location: https://source.sierrawireless.com/resources/airlink/software_downloads/nucaleos/raven-xe-firmware-list/ Sierra Wirelesss Raven XT firmware Version 4.0.11, is available at the following location: https://source.sierrawireless.com/resources/airlink/software_downloads/nucaleos/raven-xt-firmware-list/ Sierra Wireless has released a Technical Bulletin, which is available at the following location: https://source.sierrawireless.com/resources/airlink/software_reference_docs/raven-ics-alert-16-182-01/ For additional information about these vulnerabilities or the recommendations provided, please contact Sierra Wireless security team at: email@example.com NCCIC/ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of these vulnerabilities. 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. ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. ICS-CERT 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 in the ICSCERT Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the ICS-CERT web site. Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to ICS-CERT for tracking and correlation against other incidents. No known public exploits specifically target these vulnerabilities. VULNERABILITY OVERVIEW IMPROPER AUTHORIZATION CWE-285 Several files and directories can be accessed without authentication, which may allow a remote attacker to perform sensitive functions including arbitrary file upload, file download, and device reboot. CVE-2017-6044 has been assigned to this vulnerability. A CVSS v3 base score of 10.0 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H). CROSS-SITE REQUEST FORGERY (CSRF) CWE-352 Affected devices do not verify if a request was intentionally sent by the logged-in user, which may allow an attacker to trick a client into making an unintentional request to the web server that will be treated as an authentic request. CVE-2017-6042 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:N/UI:R/S:U/C:H/I:H/A:H). INSUFFICIENTLY PROTECTED CREDENTIALS CWE-522 Sensitive information is insufficiently protected during transmission and vulnerable to sniffing, which could lead to information disclosure. CVE-2017-6046 has been assigned to this vulnerability. A CVSS v3 base score of 4.3 has been assigned; the CVSS vector string is (AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N). RESEARCHER Independent researcher Karn Ganeshen identified and publicly released vulnerabilities in the Sierra Wireless AirLink Raven XE and XT Gateways prior to coordinating with ICS-CERT; however, the researcher did initially coordinate the identified vulnerabilities with the vendor. BACKGROUND Critical Infrastructure Sector(s): Critical Manufacturing, Energy Countries/Areas Deployed: Worldwide Company Headquarters Location: British Columbia, Canada Contact Information For any questions related to this report, please contact ICS-CERT at: Email: firstname.lastname@example.org Toll Free: 1-877-776-7585 International Callers: (208) 526-0900 For industrial control systems security information and incident reporting: http://ics-cert.us-cert.gov ICS-CERT 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 email@example.com 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. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: firstname.lastname@example.org 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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