Re: CVE Request -- wireshark (X >= 1.6.8): DoS (excessive CPU use and infinite loop) in DRDA dissector

[Eygene Ryabinkin <rea-sec () codelabs ru>]

Wed, Aug 29, 2012 at 11:39:11AM -0400, Jan Lieskovsky wrote:
> a denial of service flaw was found in the way Distributed Relational
> Database Architecture (DRDA) dissector of Wireshark, a network
> traffic analyzer, performed processing of certain DRDA packet
> capture files. A remote attacker could create a specially-crafted
> capture file that, when opened could lead to wireshark executable to
> consume excessive amount of CPU time and hang with an infinite loop.
[...]
> Affected versions: Seems to affect wireshark 1.6.x versions and
>                    later (1.0.x and 1.2.x definitely aren't affected)

1.5.x is affected too: 1.5.0 was the first release in which the
handling for the multiple DRDA commands was added to.  1.4 has no
such code, whereas 1.5.0 has the while loop that provokes DoS.
-- 
Eygene