tcpdump mailing list archives

Re: Seg fault of tcpdump (v 3.8.1 and below) with malformed l2tp packets


From: Michael Richardson <mcr () sandelman ottawa on ca>
Date: Sun, 28 Dec 2003 19:06:00 -0500

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"Michele" == Michele 'mydecay' Marchetto <smarchetto1 () tin it> writes:
    >> My quotes in perl got messed up:
    >> 
    >> perl -e 'print "\x80\x02"."\x00"x6' | nc -u 10.1.1.1 1701
    >> 
    >> and 
    >> 
    >> perl -e 'print "\x80\x02"."\x00"x6 ."\x01"' | nc -u 10.1.1.1 1701

    Michele> this patch should fix this bug.. try it on cvs version

  Can you do this, and at the same time:

  tcpdump -s 1600 -w somefile.pcap

  and send the results?
  
  We can add that to the test cases.

]       ON HUMILITY: to err is human. To moo, bovine.           |  firewalls  [
]   Michael Richardson,    Xelerance Corporation, Ottawa, ON    |net architect[
] mcr () xelerance com      http://www.sandelman.ottawa.on.ca/mcr/ |device driver[
] panic("Just another Debian GNU/Linux using, kernel hacking, security guy"); [
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