Practically two dozen safety vulnerabilities have been disclosed in Advantech EKI industrial-grade wi-fi entry level units, a few of which may very well be weaponized to bypass authentication and execute code with elevated privileges.
“These vulnerabilities pose vital dangers, permitting unauthenticated distant code execution with root privileges, thereby absolutely compromising the confidentiality, integrity, and availability of the affected units,” cybersecurity firm Nozomi Networks mentioned in a Wednesday evaluation.
Following accountable disclosure, the weaknesses have been addressed within the following firmware variations –
- 1.6.5 (for EKI-6333AC-2G and EKI-6333AC-2GD)
- 1.2.2 (for EKI-6333AC-1GPO)
Six of the recognized 20 vulnerabilities have been deemed crucial, permitting an attacker to acquire persistent entry to inner sources by implanting a backdoor, set off a denial-of-service (DoS) situation, and even repurpose contaminated endpoints as Linux workstations to allow lateral motion and additional community penetration.
Of the six crucial flaws, 5 (from CVE-2024-50370 by CVE-2024-50374, CVSS scores: 9.8) relate to improper neutralization of particular parts utilized in an working system (OS) command, whereas CVE-2024-50375 (CVSS rating: 9.8) considerations a case of lacking authentication for a crucial perform.
Additionally of word is CVE-2024-50376 (CVSS rating: 7.3), a cross-site scripting flaw that may very well be chained with CVE-2024-50359 (CVSS rating: 7.2), one other occasion of OS command injection that might in any other case require authentication, to attain arbitrary code execution over-the-air.
That mentioned, to ensure that this assault to achieve success, it requires the exterior malicious consumer to be in bodily proximity to the Advantech entry level and broadcast a rogue entry level.
The assault will get activated when an administrator visits the “Wi-Fi Analyzer” part within the internet utility, inflicting the web page to routinely embed data acquired by beacon frames broadcasted by the attacker with none sanitization checks.
“One such piece of data an attacker may broadcast by its rogue entry level is the SSID (generally known as the ‘Wi-Fi community title’),” Nozomi Networks mentioned. “The attacker may due to this fact insert a JavaScript payload as SSID for its rogue entry level and exploit CVE-2024-50376 to set off a Cross-Web site Scripting (XSS) vulnerability inside the online utility.”
The result’s the execution of arbitrary JavaScript code within the context of the sufferer’s internet browser, which may then be mixed with CVE-2024-50359 to attain command injection on the OS stage with root privileges. This might take the type of a reverse shell that gives persistent distant entry to the risk actor.
“This might allow attackers to achieve distant management over the compromised machine, execute instructions, and additional infiltrate the community, extracting knowledge or deploying extra malicious scripts,” the corporate mentioned.
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