Packeteer PacketWise CLI overflow DoS

[kian.mohageri () gmail com]

Product: Packeteer PacketShaper
Model: 9500/ISP
Software: PacketWise 8.x (possibly others)

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Background
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Packeteer creates bandwidth management solutions such as the PacketShaper which "is the ultimate scalable platform for 
optimized WAN application performance—the only all-in-one solution for extending monitoring, shaping, acceleration and 
compression as well as centralized reporting and management across the distributed enterprise."

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Description
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The Packeteer PacketShaper appears to be vulnerable to a buffer overflow which can be triggered by a valid command 
followed by a long argument (around 1500 bytes).

# class show /Inbound/AAAAA...

There appear to be other places where such behavior can be seen, e.g. via the web interface:

https://xx.xx.xx.xx/clastree.htm?POLICY=/Inbound/Filesharing/BitTorrent/AAAAA...

Both of these examples require either "look" or "touch" access to the device.

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Impact
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The watchdog timer will trigger a unit reset/reboot, which takes around 30 seconds.  If there is no bypass mechanism in 
place (e.g. fiber bypass switch), service will be interrupted.



Packeteer has not responded to the initial reports.