Wireshark-dev: Re: [Wireshark-dev] Failure to dissect long SASL wrapped LDAP response
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From: Kaul <mykaul@xxxxxxxxx>
Date: Fri, 13 Jun 2008 10:38:18 +0300
SVN 25443 - same behavior.

On Thu, Jun 12, 2008 at 11:49 PM, Jaap Keuter <jaap.keuter@xxxxxxxxx> wrote:
Hi,

Can you test the last buildbot build? You can find it here:
http://www.wireshark.org/download/automated/win32/

Thanx,
Jaap

Kaul wrote:
> Wireshark 1.0.0, win32, fails to de-segment (TCP level?) and properly
> dissect a pretty long (229959 bytes entire conversation) SASL wrapped
> LDAP response. Regretfully, I cannot share the capture, but the first
> packet that is not desgemented or dissected in any way (just shows as
> TCP payload) is (partial):
> 0000   00 1a 4a 16 45 5b 00 e0 81 58 df d2 08 00 45 00  ..J.E[...X....E.
> 0010   05 dc 0a 32 40 00 7f 06 b6 5f ac 12 00 0a ac 12  ...2@...._......
> 0020   dd 5b 01 85 04 6f 45 8d a8 34 af 22 1e e4 50 10  .[...oE..4."..P.
> 0030   fc 6b f5 dc 00 00 00 03 6c c9 60 83 03 6c c4 06  .k......l.`..l..
> 0040   09 2a 86 48 86 f7 12 01 02 02 02 01 11 00 ff ff  .*.H............
> 0050   ff ff 08 ae f4 9e f4 35 2f ce dc d3 82 f1 55 e9  .......5/.....U.
> 0060   31 69 c4 2b 93 b2 85 fc 80 14 30 84 00 03 6c 7c  1i.+......0...l|
> 0070   02 01 31 64 84 00 03 6c 73 04 40 43 4e 3d 41 67  ..1d...ls.@CN=Ag
> 0080   67 72 65 67 61 74 65 2c 43 4e 3d 53 63 68 65 6d  gregate,CN=Schem
> ...
> Notice from offeset 0x36 (after the TCP header) - the size of the SASL
> buffer is 00 03 6c c9 (224457 bytes), then the usual LDAP ASN.1: 0x60,
> then 0x83, (3 bytes of length which is now 0x36cc4 -> correctly 5 bytes
> less than the SASL buffer, followed by the Kerberos 5 OID, and so on.
> Please note that previos LDAP request and responses were nicely
> dissected. It's just this long response that doesn't play nice. The
> unbind request at the end of all this also looks nice.
>
> I'd be happy to work with someone on testing a fix for it. I could test
> a Windows binary or a source patch in Linux.
>
> Thanks in advance,
> Yaniv.
>

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