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Cisco has fixed a critical vulnerability, CVE-2024-20418, that allowed unauthenticated remote attackers to gain root access on Ultra-Reliable Wireless Backhaul (URWB) access points used in industrial wireless automation.
The vulnerability is found in the web management interface of Cisco Unified Industrial Wireless Software for URWB Access Points.
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The vulnerability lets attackers run arbitrary commands as root by sending special HTTP requests to the device.
“A vulnerability in the web-based management interface of Cisco Unified Industrial Wireless Software for Cisco Ultra-Reliable Wireless Backhaul (URWB) Access Points could allow an unauthenticated, remote attacker to perform command injection attacks with root privileges on the underlying operating system.” reads the advisory published by the company.
“This vulnerability is due to improper validation of input to the web-based management interface. An attacker could exploit this vulnerability by sending crafted HTTP requests to the web-based management interface of an affected system. A successful exploit could allow the attacker to execute arbitrary commands with root privileges on the underlying operating system of the affected device.”
The vulnerability only affects specific models in URWB mode: Catalyst IW9165D, IW9165E, and IW9167E access points. To check if the device is affected, use the “show mpls-config” CLI command. If available, URWB mode is enabled and the device is vulnerable.
Cisco PSIRT has not detected any real-world attacks exploiting this vulnerability, and there are no available workarounds.
