An issue was discovered in Lantronix EDS5000 2.1.0.0R3. The HTTP RPC module executes a shell command to write logs when user's authentication fails. The username is directly concatenated with the command without any sanitization. This allow attackers to inject arbitrary OS commands into the username parameter. Injected commands are executed with root privileges.
Credits
Francesco La Spina and Stanislav Dashevskyi of Forescout Technologies reported the vulnerability for the EDS5000 series to CISA.
Lantronix reported the vulnerability for the G520 series, X300 series, E210 series, and E220 series to CISA.
