full-disclosure - Re: [FD] Hilariously Bad SQRL Implementation

Open Source and information security mailing list archives

Date: Wed, 20 Aug 2014 17:24:10 -0400
From: Travis Biehn <tbiehn@...il.com>
To: Scott Arciszewski <kobrasrealm@...il.com>
Cc: fulldisclosure@...lists.org
Subject: Re: [FD] Hilariously Bad SQRL Implementation

An additional note, the SQRL protocol itself is pretty poorly documented on
the GRC website:
https://www.grc.com/sqrl/details.htm

Instead of writing technical specifications like online sales copy for
penis pills perhaps we can get a draft in an ... RFC like format.

On Sun, Aug 17, 2014 at 8:22 PM, Scott Arciszewski <kobrasrealm@...il.com>
wrote:

> If any of you are familiar with Stephen Gibson's SQRL protocol for user
> authentication (really neat idea), you might have come across this PHP
> implementation before: https://github.com/geir54/php-sqrl
>
> Unfortunately, this library is actually pretty terrible. Not only does it
> pass all of the data off to a Heroku app to perform the signature
> verification, it is also vulnerable to SQL Injection:
>
>
> https://github.com/geir54/php-sqrl/blob/0fa574520a1843a33a84c3985f934e84af6f2042/sqrl_verify.php#L39-59
>
> I thought about submitting a pull request to fix this, but I don't believe
> there is honestly much here to salvage. So, I'm writing my own
> implementation here:
>
> https://github.com/darkitecht/php-sqrl <- Not ready, at all, for even beta
> testing.
>
> P.S. Also, it uses mt_rand() for challenge generation in a crypto library.
> Tsk tsk.
>
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