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Re: Buffer Overflow in dnsmap 0.22 - DNS Network Mapper by pagvac (gnucitizen.org)
From: Jason Starks <jstarks440 () gmail com>
Date: Wed, 25 Feb 2009 11:10:57 -0500

I'm going to say dnsmap isn't suid or sguid, and a segmentation fault can
occur after triggering a simple programming error (you've shown no signs of
code execution). Terrrrrrrific.

On Wed, Feb 25, 2009 at 10:36 AM, srl <security.research.labs () gmail com>wrote:

Security Advisory:

PRODUCT
************
http://www.gnucitizen.org/blog/new-version-of-dnsmap-out/
http://www.gnucitizen.org/static/blog/2009/02/dnsmap-022.tar

This this is a great tool, used by the two pentesters, pagvac and pdp

TECHNICAL DESCRIPTION
********************************
A local buffer overflow exist in dnsmap 0.22.
$ dnsmap -r `perl -e 'print "A"x250'`
dnsmap 0.22 - DNS Network Mapper by pagvac (gnucitizen.org)

Segmentation fault

SOLUTION
*************
Wait until pagvac will learn about strncpy().











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_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/

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