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Date: Sat, 26 Jan 2013 18:29:49 +0100
From: Frank Dittrich <>
Subject: Re: Segfault in Jumbo --stdout

On 01/26/2013 04:02 PM, Dhiru Kholia wrote:
> On Sat, Jan 26, 2013 at 7:01 PM, Costin Enache <> wrote:
>> ./john --rules --wordlist=password.lst --stdout
>> Segmentation fault
>> Something went wrong. The world list can exist or not, the segfault happens
>> earlier. Without using –stdout all is fine.
> Hi Costin,
> Thanks for the report.
> Disabling "if (!strncmp(database.format->params.label, "wpapsk", 6)"
> code-block in john.c (line 726) makes the problem go away.
> Hopefully someone familiar with this piece of code will take a look soon.

A better fix is:

-		if (!strncmp(database.format->params.label, "wpapsk", 6) &&
+		if (database.format->params.label &&
+		    !strncmp(database.format->params.label, "wpapsk", 6) &&

But that the segfault didn't occur without --rules indicates that
magnum's intended fix do adjust min. length for wpapsk to 8 doesn't
always work.


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