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Friday, 26 April 2019 10:33

Talos finds 11 flaws in Sierra LTE gateway ES450

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Talos finds 11 flaws in Sierra LTE gateway ES450 Courtesy Sierra Wireless

A total of 11 vulnerabilities have been found in the Sierra Wireless AirLink ES450, an LTE gateway which is aimed at distributed enterprise such as retail point-of-sale and industrial control systems, Cisco's Talos Intelligence Group says.

Researchers Carl Hurd and Jared Rittle said in a blog post that the flaws opened up a variety of attack vectors that could allow attackers to remotely execute code on a victim's machine, change the admin password, and expose user credentials.

Most of the vulnerabilities were present in the Web server included with the ES450; it is known as ACEManager and is used for most interactions with the device, including reconfiguration. user authentication and managing certificates.

Hurd and Rittle said they had tested and verified that the ES450 was vulnerable to all 11 flaws.

Among the flaws is a hard-coded vulnerability in the SNMPD (simple network management protocol daemon) function of the ES450 FW 4.9.3 model. In this case, activating SNMPD outside the Web user interface will activate the hard-coded credentials and expose a privileged user. Activation of SNMPD can be achieved without any configuration changes.

Sierra Wireless was contacted and confirmed that the following devices were all affected by one or more of the flaws:

  • GX400
  • ES/GX440
  • LS300
  • ES/GX450
  • MP70
  • RV50/50X
  • LX40/60X

Fresh firmware to fix the flaws is yet to be issued.

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Sam Varghese

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Sam Varghese has been writing for iTWire since 2006, a year after the site came into existence. For nearly a decade thereafter, he wrote mostly about free and open source software, based on his own use of this genre of software. Since May 2016, he has been writing across many areas of technology. He has been a journalist for nearly 40 years in India (Indian Express and Deccan Herald), the UAE (Khaleej Times) and Australia (Daily Commercial News (now defunct) and The Age). His personal blog is titled Irregular Expression.

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