COMMAND
FlowPoint DSL router
SYSTEMS AFFECTED
FlowPoint DSL router 3.0.2...3.0.7
PROBLEM
The following URL contains information about a firmware upgrade
for FlowPoint DSL routers that fixes a possible "security
compromise". FlowPoint has chosen not to release ANY information
whatsoever about the vulnerability:
http://www.flowpoint.com/support/techbulletin/sec308.htm
It involves a bug that allows a password recovery feature to be
utilized from the LAN or WAN instead of just the serial console
port. Basically, throwing enough 6 digit numbers at a pre-3.0.8
router will allow you to get access to the box to do whatever you
want. It appears as if the problem started in 3.0.4.
SOLUTION
You can obtain the firmware version 3.0.8 or later from
FlowPoint's FTP site:
ftp://systemv.com/pub/flopoint/support/upgrade/
You can turn off SNMP and/or telnet or only allow either from
specific hosts, which is explained in the CLI manual. The 6 digit
serial number for a password is only in use if you enable the
password recovery feature, so even if you have telnet access it
isn't usually enabled. Even without the firewall feature set
(which costs more) you can decide which hosts can access telnet
or SNMP.