Wireshark-bugs: [Wireshark-bugs] [Bug 9690] New: DHCPv6 Packet dissector incorrectly validating
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Wed, 22 Jan 2014 23:33:51 +0000
Bug ID 9690
Summary DHCPv6 Packet dissector incorrectly validating option 17.2171.6
Classification Unclassified
Product Wireshark
Version 1.11.x (Experimental)
Hardware x86
OS Mac OS X 10.9
Status UNCONFIRMED
Severity Normal
Priority Low
Component Dissection engine (libwireshark)
Assignee bugzilla-admin@wireshark.org
Reporter akostur@incognito.com 

Build Information:
Unfortunately, I can't.  That menu item doesn't do anything.  v1.11.2 as
downloaded.
--
The code for dealing with PKT_CCC_KRB_REALM (6) is attempting to validate the
contents of the sub-option too stringently.  The content of the realm name is
an RFC 1035-encoded FQDN.  So if one specified BASIC.1, you'd get the content
of 05 42 41 53 49 43 01 31 00.  However, the test is looking for A-X, ., /, \,
=, ", ,, and :.  But the 01 byte in there will cause the test to fail, and then
Wireshark will claim that the content of that option is ill-formed.

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