Critical OpenWrt Vulnerability Exposes Devices to Malicious Firmware Injection
Dec 13, 2024
Linux / Vulnerability
A security flaw has been disclosed in OpenWrt 's Attended Sysupgrade ( ASU ) feature that, if successfully exploited, could have been abused to distribute malicious firmware packages. The vulnerability, tracked as CVE-2024-54143 , carries a CVSS score of 9.3 out of a maximum of 10, indicating critical severity. Flatt Security researcher RyotaK has been credited with discovering and reporting the flaw on December 4, 2024. The issue has been patched in ASU version 920c8a1 . "Due to the combination of the command injection in the imagebuilder image and the truncated SHA-256 hash included in the build request hash, an attacker can pollute the legitimate image by providing a package list that causes the hash collision," the project maintainers said in an alert. OpenWrt is a popular open-source Linux-based operating system for routers, residential gateways, and other embedded devices that route network traffic. Successful exploitation of the shortcoming could essentiall...