full-disclosure - SNMP read-only opens up... what?

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Message-ID: <OFF162FF30.F560AFDE-ON85256D3B.00751266-85256D3B.0076B558@tco.census.gov>
From: lee.e.rian at census.gov (lee.e.rian@...sus.gov)
Subject: SNMP read-only opens up... what?


>why would you make this information available at all?

Why not?  I know "why make it available at all?" is the proper question
from a security standpoint.  I'm just wondering what it opens you up to.

Suppose a vendor has a bug in their software that creates a read-only
community string with no access list protecting it.  How much of an issue
would that be and why?

Regards,
Lee




|---------+-------------------------------------->
|         |           peter moody                |
|         |           <peter@...c.edu>           |
|         |           Sent by:                   |
|         |           full-disclosure-admin@...ts|
|         |           .netsys.com                |
|         |                                      |
|         |                                      |
|         |           06/04/03 03:10 PM          |
|         |                                      |
|---------+-------------------------------------->
  >------------------------------------------------------------------------------------------------------------------------------|
  |                                                                                                                              |
  |       To:       lee.e.rian@...sus.gov                                                                                        |
  |       cc:       full-disclosure@...ts.netsys.com                                                                             |
  |       Subject:  Re: [Full-Disclosure] SNMP read-only opens up... what?                                                       |
  >------------------------------------------------------------------------------------------------------------------------------|




you could get the product type, version information etc from certain
mibs.  you could tell how busy the site is, and from that infer how big
a pipe you've got.

There's a lot more.  I would snmp-walk the device and find out what it
tells you.

but I've got to ask, why would you make this information available at
all?


On Wed, 2003-06-04 at 10:44, lee.e.rian@...sus.gov wrote:
> Say I configure a router with a read-only SNMP community of "public" and
> make it Internet accessible.  What vulnerabilities or information
> disclosure does that open up that would be better left closed?  A switch?
>
> Thanks,
> Lee

--
Peter Moody                             <peter@...c.edu>
InfoSec Administrator                   831/459.5409
Communications and Technology Services. http://mustard.ucsc.edu/pubkey
UC, Santa Cruz.
:wq
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