1 Alert and 4 Advisories Published – 3-3-20

Yesterday the CISA NCCIC-ICS published a control system security alert for products from SweynTooth and four security advisories for products form Moxa, Omron, Phoenix Contact, and Emerson.

SweynTooth Alert

This alert describes multiple Bluetooth Low Energy (BLE) vulnerabilities known as the SweynTooth vulnerabilities. The vulnerabilities were reported by Matheus E. Garbelini, Sudipta Chattopadhyay, and Chundong Wang of the Singapore University of Technology and Design. NCCIC-ICS is coordinating with chip vendors on a resolution of these vulnerabilities.

Last month I briefly reported on an advisory issued by Philips for these vulnerabilities.

Moxa Advisory

This advisory describes twelve vulnerabilities in the Moxa Moxa AWK-3131A wireless networking appliance. The vulnerabilities were reported by Jared Rittle, Carl Hurd, Patrick DeSantis, and Alexander Perez Palma of Cisco Talos. Moxa has a patch that mitigates the vulnerabilities. There is no indication that the researchers have been provided an opportunity to verify the efficacy of the fix.

NCCIC-ICS reports that a relatively low-skilled attacker using publicly available code could remotely exploit the vulnerabilities to allow an attacker to gain control of the device and remotely execute arbitrary code.

NOTE: Last Saturday I reported briefly on these vulnerabilities and provided links to the individual Talos reports that provide the proof-of-concept exploit code for these vulnerabilities.

Omron Advisory

This advisory describes an uncontrolled resource consumption vulnerability in the Omron PLC CJ Series. The vulnerability was reported by Jipeng You (XDU). Omron provided generic workarounds to mitigate the vulnerability.

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit the vulnerability to cause a denial-of-service condition.

Phoenix Contact Advisory

This advisory describes an incorrect permission assignment for critical resource vulnerability in the Phoenix Contact Emalytics Controller ILC 2050 BI(L). The Phoenix Contact advisory notes that the vulnerability was reported by Anil Parmar. Phoenix Contact has a new version that mitigates the vulnerability. There is no indication that Parmar has been provided an opportunity to verify the efficacy of the fix.

NCCIC-ICS reports that a relatively low-skilled attacker could remotely exploit this vulnerability to allow an attacker to change the device configuration and start or stop services.

NOTE: I briefly reported on this vulnerability last month.

Emerson Advisory

This advisory describes an improper access control vulnerability in the Emerson ValveLink. The vulnerability is self-reported. Emerson has a new version that mitigates the vulnerability.

NCCIC-ICS reports that a relatively low-skilled attacker with uncharacterized access could exploit the vulnerability to allow arbitrary code execution.

Public ICS Disclosure – Week of 2-15-20

This week we have four vendor disclosures for products from Phoenix Contact, Philips, BD and Belden. We also have one researcher report on products from Siemens.

Phoenix Contact Advisory

Phoenix Contact published an advisory [.PDF download link] describing an unauthenticated web server access vulnerability in their Emalytics Controllers ILC 2050 BI. The vulnerability was reported by Anil Parmar. Phoenix Contact has a new version that mitigates the vulnerability. There is no indication that Parmar has been provided an opportunity to verify the efficacy of the fix.

Philips Advisory

Philips published an advisory on the SweynTooth Bluetooth vulnerabilities. Philips is looking to see if any of their products are affected.

NOTE: The 12 disclosed vulnerabilities affect the Bluetooth Low Energy chipsets sold by major SoC vendors, such as Texas Instruments, NXP, Cypress, Dialog Semiconductors, Microchip,

STMicroelectronics and Telink Semiconductor.

BD Advisory

BD published an advisory describing Windows® 32K graphics vulnerabilities (CVE-2019-1458 and CVE-2019-1468) in their products using Windows operating systems. BD is currently working to test and validate the Microsoft patch for BD products. Microsoft included fixes for these vulnerabilities in their December 10^th, 2019 updates.

Belden Advisory

Belden published an advisory describing a buffer overflow vulnerability in their Hirschmann HiOS and HiSecOS devices. The vulnerability was reported by Sebastian Krause and Toralf Gimpel of GAI NetConsult. Belden has updates available that mitigate the vulnerability. There is no indication that the researchers have been provided an opportunity to verify the efficacy of the fix.

Siemens Report

Tenable published a report describing a denial of service vulnerability in the Siemens TIA Portal. Siemens published their advisory on this vulnerability earlier this month. The Tenable report includes proof of concept code.