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OT Safety Agency Warns of Security Dangers Posed by Alerton Constructing System Vulnerabilities

By Eduard Kovacs on August 11, 2022

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OT and IoT cybersecurity firm SCADAfence has found doubtlessly critical vulnerabilities in a extensively used constructing administration system made by Alerton, a model of commercial big Honeywell.

4 vulnerabilities have been discovered within the Alerton Compass software program, which is the product’s human-machine interface (HMI), the Ascent Management Module (ACM), and the Visible Logic element. SCADAfence says that is the primary time CVE identifiers have been assigned to vulnerabilities in Alerton merchandise.

SCADAfence will quickly publish a weblog submit detailing its findings. Within the meantime, the corporate has issued a press launch that factors to Nationwide Vulnerability Database entries offering some technical data for every of the 4 safety holes.

The vulnerabilities, two of which have been rated ‘excessive severity’, will be exploited by sending specifically crafted packets to the focused system. Distant, unauthenticated attackers could make configuration adjustments or write unauthorized code on the controller, each of which may result in adjustments within the controller’s performance. If an attacker writes malicious code on the controller, the sufferer might want to overwrite this system in an effort to restore the unique operational perform.

The cybersecurity agency identified that the malicious adjustments wouldn’t be mirrored within the person interface, making it extra doubtless for the assault to go unnoticed.

SecurityWeek has used the Shodan search engine to search for internet-exposed Alerton methods and located 240 outcomes, a large majority in america and a dozen in Canada. A lot of the uncovered methods are HMIs and controllers.

Yossi Reuven, safety analysis workforce lead at SCADAfence, confirmed for SecurityWeek that exploitation of the vulnerabilities straight from the web is feasible.

SCADAfence has described a number of theoretical worst-case situations involving exploitation of the vulnerabilities.

Hackers may, as an illustration, goal a constructing’s administration system to trigger ‘catastrophic harm’, or they may tamper with temperatures in healthcare, pharmaceutical or meals manufacturing services the place sustaining sure temperatures is vital. Malicious actors may additionally remotely shut down air flow methods, which may pose a security threat in manufacturing services that work with harmful chemical compounds.

SCADAfence says Honeywell is predicted to launch patches quickly. Within the meantime, the cybersecurity agency has shared a collection of suggestions for impacted Alerton prospects, together with making certain that their OT community is remoted, correctly configuring constructing automation system (BAS) firewalls, creating and sustaining ACM baseline configurations, disabling BAS protocols on exterior community segments, and disabling Ethernet on all ports the place it’s not wanted.

SecurityWeek has reached out to Honeywell for remark and can replace this text if the corporate responds. 

Risk actors concentrating on constructing administration methods isn’t unprecedented. Kaspersky reported just lately that Chinese language hackers used a lot of these methods as a degree of infiltration in an assault geared toward a telecoms firm.

Associated: Schneider Electrical, Claroty Launch Cybersecurity Answer for Buildings

Associated: Hackers Can Make Siemens Constructing Automation Controllers ‘Unavailable for Days’

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