High · published April 18, 2024
The devices allow access to an unprotected endpoint that allows MPFS
file system binary image upload without authentication. The MPFS2 file
system module provides a light-weight read-only file system that can be
stored in external EEPROM, external serial flash, or internal flash
program memory. This file system serves as the basis for the HTTP2 web
server module, but is also used by the SNMP module and is available to
other applications that require basic read-only storage capabilities.
This can be exploited to overwrite the flash program memory that holds
the web server's main interfaces and execute arbitrary code.