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Re: Very interesting traceroute flaw
From: Sylvain Robitaille <syl () ALCOR CONCORDIA CA>
Date: Fri, 29 Sep 2000 11:50:15 -0400

Chris Evans wrote:

This flaw in traceroute (if your version is vulnerable) is tickled
like this:

traceroute -g 1 -g 1       (I think it didn't need a hostname)
Segmentation fault

For the record, I tested this on Slackware Linux (4.0, and 3.x), as well
as Digital (Compaq) Unix versions 4.0d, 4.0e, and 4.0g, and Solaris-2.7,
and found that none of those systems have a vulnerable version of

On the Linux systems, traceroute doesn't accept the '-g' option; Solaris
traceroute complains without a hostname, and runs with one, (no
segmentation fault, though the output appears unreliable); All tested
versions of Digital Unix dutifully try to traceroute to

Sylvain Robitaille                              syl () alcor concordia ca

Systems analyst                                   Concordia University
Instructional & Information Technology        Montreal, Quebec, Canada

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