Snort mailing list archives
Re: ACID: Bug in decoding of ICMP packets payload?
From: roman () danyliw com
Date: Thu, 10 Jan 2002 22:23:41 EST
Patch committed. thanks, Roman
Thanks for the quick fix; I checked out the CVS source and saw the
patch. Didnt new about the padding...
Reading the patch I got to:
/* Will be incorrect if there are IP options */
$icmp_src_port =
hexdec($work[44+$offset].$work[45+$offset].$work[46+$offset].$work[47+$offset]);
$icmp_dst_port =
hexdec($work[48+$offset].$work[49+$offset].$work[50+$offset].$work[51+$offset]);
I think that could easily be fixed with, say:
$header=$work[$offset+1]*8+$offset;
$icmp_src_port =
hexdec($work[$header].$work[$header+1].$work[$header+2].$work[$header+3]);
$icmp_dst_port =
hexdec($work[$header+4].$work[$header+5].$work[$header+6].$work[$header+7]);
Right?
Thanks again and good luck,
Jesús Couto F.
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Current thread:
- ACID: Bug in decoding of ICMP packets payload? Jesus Couto (Jan 09)
- <Possible follow-ups>
- Re: ACID: Bug in decoding of ICMP packets payload? Roman Danyliw (Jan 09)
- Re: ACID: Bug in decoding of ICMP packets payload? Jesus Couto (Jan 10)
- Re: ACID: Bug in decoding of ICMP packets payload? roman (Jan 10)
