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AUSCERT External Security Bulletin Redistribution
Sierra Wireless AirLink Raven XE and XT
26 April 2017
AusCERT Security Bulletin Summary
Product: Sierra Wireless AirLink Raven XE and XT
Operating System: Network Appliance
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Cross-site Request Forgery -- Remote with User Interaction
CVE Names: CVE-2017-6046 CVE-2017-6044 CVE-2017-6042
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Sierra Wireless AirLink Raven XE and XT
Original release date: April 25, 2017
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CVSS v3 10.0
ATTENTION: Remotely exploitable/low skill level to exploit. Public exploits
Vendor: Sierra Wireless
Equipment: AirLink Raven XE and XT
Vulnerabilities: Improper Authorization, Cross-Site Request Forgery,
Insufficiently Protected Credentials
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.
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.
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.
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
Sierra Wirelesss Raven XT firmware Version 4.0.11, is available at the
Sierra Wireless has released a Technical Bulletin, which is available at
the following location:
For additional information about these vulnerabilities or the recommendations
provided, please contact Sierra Wireless security team at:
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.
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
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
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
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.
Critical Infrastructure Sector(s): Critical Manufacturing, Energy
Countries/Areas Deployed: Worldwide
Company Headquarters Location: British Columbia, Canada
For any questions related to this report, please contact ICS-CERT at:
Toll Free: 1-877-776-7585
International Callers: (208) 526-0900
For industrial control systems security information and incident reporting:
ICS-CERT continuously strives to improve its products and services. You
can help by choosing one of the links below to provide feedback about
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