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Old 12-20-2011, 04:51 PM   #1
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MontaVista Linux (MVL) - Need Root Access

I'm hoping the Linux community can help me out here. I have a mini-dome IP camera which is running off a TI DaVinci DM 355 board (ARM) and is running MVL Pro Ed. 4.0.1. I need to do 2 things: 1) change the IP address and 2) enable PoE.

First, I am able to access the device via telnet using Putty. I need to change the IP (from the default), but when I type su at the shell I get "su: This applet requires root priviledges!" (What's with the typo anyway?)

Second, the camera is suppose to support Power over Ethernet (PoE), but when I plug it into the Cisco Catalyst inline switch, I do NOT get a link light. The switch has a default config (nothing fancy); inline power is enabled by default. However, if I use the power adapter which came w/ the camera, then I get power & link. But again, the unit is suppose to have PoE. I'm thinking this feature may be disabled in s/w.

I need assistance in getting root access. Any assistance the community can provide would be much appreciated.

Last edited by blenderboy; 12-20-2011 at 04:53 PM.
Old 12-20-2011, 07:37 PM   #2
Registered: May 2002
Location: dracut MA
Distribution: Fedora, RHEL
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You'll need to crack open the device, find the serial pins (if they're on it), and attach a serial cable to watch it boot and interrupt the boot process.


If you're handy with metasploit, and the mmap_min_addr bug can be triggered on that box, you might be able to get root that way.
Old 12-21-2011, 04:00 PM   #3
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I've used metasploit before, but will use as a last resort. Here's something interesting:

I am able to login as root (w/ a blank pwd) via ftp; I can navigate the file system and download the network config files, make changes, and then upload it back. However, when I power cycle the camera it's as if the drive is wiped / restored from an image as none of my changes are saved.

Any thoughts?


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