26 April 2018
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2018.1268 Advisory (ICSA-18-114-02) Intel 2G Modem 26 April 2018 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Intel 2G Modem Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2018-3624 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-18-114-02 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-18-114-02) Intel 2G Modem Original release date: April 24, 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 Vendor: Intel Equipment: Intel 2G Modem Vulnerability: Buffer Overflow 2. RISK EVALUATION Successful exploitation of this buffer overflow vulnerability may allow remote code execution. The vulnerability affects Intel 2G modem products where the earthquake tsunami warning system (ETWS) feature is enabled in modem firmware. Devices equipped with an affected modem, when connected to a rogue 2G base station where non-compliant 3GPP software may be operational, are potentially at risk. 3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following products use the vulnerable Intel modem with 2G capability and ETWS enabled: Intel XMM71xx Intel XMM72xx Intel XMM73xx Intel XMM74xx Sofia 3G Sofia 3G-R Sofia 3G-R W Versions that support 2G and the ETWS feature delivered to system manufactures prior to the disclosure of CVE-2018-3624 may be affected. 3.2 VULNERABILITY OVERVIEW 3.2.1 BUFFER COPY WITHOUT CHECKING SIZE OF INPUT ('CLASSIC BUFFER OVERFLOW') CWE-120 Buffer overflow in ETWS processing module allows a remote attacker to potentially execute arbitrary code via an adjacent network. CVE-2018-3624 has been assigned to this vulnerability. A CVSS v3 base score of 8.2 has been calculated; the CVSS vector string is (AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:L). 3.3 BACKGROUND Critical Infrastructure Sectors: Communication, Information Technology Countries/Areas Deployed: Worldwide Company Headquarters Location: United States 3.4 RESEARCHER Dr. Ralph Phillip Weinmann and Dr. Nico Golde from Comsecuris reported this vulnerability to Intel, and Intel reported the vulnerability to NCCIC. 4. MITIGATIONS Intel is making firmware updates available to device manufacturers that protect systems from this vulnerability. End users should check with their device manufacturers and apply any available updates as soon as practical. Intel has released the following security advisory: https://security-center.intel.com/advisory.aspx?intelid=INTEL-SA-00116&languageid=en-fr 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 in the ICS-CERT Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the ICS-CERT website. 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. This vulnerability is exploitable remotely. High skill level is needed to exploit. Contact Information For any questions related to this report, please contact the NCCIC at: Email: NCCICCUSTOMERSERVICE@hq.dhs.gov Toll Free: 1-888-282-0870 For industrial control systems cybersecurity information: http://ics-cert.us-cert.gov or incident reporting: https://ics-cert.us-cert.gov/Report-Incident? 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. 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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: 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 iQIVAwUBWuEtvYx+lLeg9Ub1AQhk6g/6Al9ZdyJ5CiEIFVfIJOpxHa31JAHUMnEI WGJfAii+LxK+d3jlTLJfdNKzm1UOh/gMS7rphMDTnzkjBGtEBczirZFBUuvWnzrR M3nHiHNgmg5yEuiZUBnQ2oO2jT+R/ET+tJNgFzSy6z0Fc0DfzfB2f46JvZBOQQyR JNF7nEaZxB+KU4czetTKwM2VmxqgnYKEb7c1ehLJskon2DEfzK10kQeNPa9+cyQd 4IO4riSgtcqJVYxc0BHQLzduh/Fxsvh6YM+OKZBvRzh1fxYkjYa76oNgEPCRTHcv BnJqVDwlqxYoq+6lSn9M7Ln4ZRQ638mt5VQ5oTRhiiUDTNjKFWDe2+q4tG+DCmJe CYu4nf9ckecHfHbnrhjeZeEgTiN5pfIuV1qTVFMapPfFtY2l6JoV8iT5oAxzYDaV UbQZLaggdFkkV39re0jIHT5h+lEwuB+xlL2hDHRxXqyYr3F+GTEUQFxJ1QkjZVgd sU5+wCwR1yjbXw/J6kEAWRAW7/J5KCJCWO77r42azmUUtvMKPEicrPFIJwXRIxfC WBFqt5KlbrXyb1RowlKdyxIsYpcznn3TQk+I98yaS72WExJUnSarf2PW+M/7wxRZ yWgmAgR22KiL6icBFrWrBvkZNJfGsoTUud+OHw8UOjOjyadUfyj6cC68XCE3oeYX +QBlNAIY6VQ= =YZI4 -----END PGP SIGNATURE-----