Date: Thu, 7 Mar 2013 19:58:42 -0600
From: adam <adam@...sy.net>
To: Christian Sciberras <uuf6429@...il.com>
Cc: full-disclosure <full-disclosure@...ts.grok.org.uk>
Subject: Re: SANS PHP Port Scanner Remote Code Execution

Screenshot for anyone who might have missed it (before cache is removed):

http://img842.imageshack.us/img842/7351/sansphpportscannerfdpng.png

On Thu, Mar 7, 2013 at 7:53 PM, adam <adam@...sy.net> wrote:

> The original page has been deleted?
>
>
> On Thu, Mar 7, 2013 at 7:50 PM, Christian Sciberras <uuf6429@...il.com>wrote:
>
>> Andrew,
>>
>>
>> You realize this guy is trying to advise people through a tutorial?
>> It's not like we're talking about average Joe shipping buggy software...
>> people *teaching bad practices,* especially in this field should be shot
>> dead
>> before they do any more damage.
>>
>> You just can't learn how to code by teaching others to do it wrongly.
>>
>> Pointing back to my comprehensive list, the author missed some of
>> the very basics of programming in general (undefined variables, no
>> indentation..).
>>
>>
>> Chris.
>>
>>
>> On Fri, Mar 8, 2013 at 2:14 AM, Andrew King <aking1012.com@...il.com>wrote:
>>
>>> Has anyone considered that loads of stuff is shipped bugged?
>>>
>>> I mean it's not like they hosted it on their site executable.  It's also
>>> not like we're talking about vsftpd where it's installed for a legitimate
>>> purpose on millions if not billions of PCs.
>>>
>>> The million eyeball test and trolling a company where one person might
>>> have to read 15 articles a day in addition to actual job duties are not
>>> even in the same realm.  Add to that maybe backdoor software like sub7 had
>>> administrative access backdoors.  The list goes on.  All I'm saying is
>>> don't be dense.
>>>
>>>
>>> On Wed, Mar 6, 2013 at 2:57 AM, Christian Sciberras <uuf6429@...il.com>wrote:
>>>
>>>> Ulisses,
>>>>
>>>> No, I'm blaming developers that are not in the field of security for
>>>> this mess.
>>>>
>>>> Chris.
>>>>
>>>>
>>>> On Wed, Mar 6, 2013 at 1:10 PM, Ulisses Montenegro <
>>>> ulisses.montenegro@...il.com> wrote:
>>>>
>>>>> Christian
>>>>>
>>>>> If you're reading my email as "it's the developers' fault", then you
>>>>> got it wrong -- I've been a developer for most of my life. And while things
>>>>> have gotten better in the last years, there are still tons of "build your
>>>>> blog 15 minutes" or "develop a twiiter clone in 2h"
>>>>> tutorials/advertisements for various platforms and languages out there
>>>>> which either assume security is a non-issue, or assume the
>>>>> platform/language will take care of it for you.
>>>>>
>>>>> Heck, the manpages for some libc functions on non-GNU platforms still
>>>>> show vulnerable code in examples. perldoc is riddled with code that is just
>>>>> enough to show how a given function should be used, but with no validation
>>>>> whatsoever. I remember reading the training material for an Oracle product
>>>>> (sorry, I really can't recall the name) which touted being able to have the
>>>>> application security handled by infrastructure/middleware componentes as a
>>>>> desirable feature.
>>>>>
>>>>> So while I'd agree that we are getting better at this, we're still far
>>>>> from ideal. The canonical "hello world" for most languages/platforms out
>>>>> there, in most cases, still does not make explicit references to security
>>>>> issues.
>>>>>
>>>>>
>>>>> On Wed, Mar 6, 2013 at 8:49 AM, Christian Sciberras <uuf6429@...il.com
>>>>> > wrote:
>>>>>
>>>>>> The article actually recommends looking for information from
>>>>>> www.w3schools.com <http://www.w3fools.com>?!
>>>>>>
>>>>>> Here's a few other obviously missing things:
>>>>>> - script requires input but does not check for it (very bad PHP
>>>>>> practice)
>>>>>> - what the hell is with that code? Ever heard about indentation?
>>>>>> - there should be some very basic sanitization; ints be ints and
>>>>>> strings be strings
>>>>>> - hiding all errors, that was a very smart thing to do....
>>>>>> - early 20's html and css coding style to boot
>>>>>>
>>>>>> Regarding the tool itself, obviously it's not meant to be used
>>>>>> publicly, hence why I could close my eye in this respect.
>>>>>>
>>>>>> UIlisses, developers already do this. Actually, they've been doing it
>>>>>> for quite some time.
>>>>>> Perhaps the "security experts" writing tutorials as in that article
>>>>>> should follow?
>>>>>>
>>>>>>
>>>>>> On Wed, Mar 6, 2013 at 11:55 AM, Dan Ballance <
>>>>>> tzewang.dorje@...il.com> wrote:
>>>>>>
>>>>>>> +1
>>>>>>> On 6 Mar 2013 10:41, "Ulisses Montenegro" <
>>>>>>> ulisses.montenegro@...il.com> wrote:
>>>>>>>
>>>>>>>> Not including proper input validation and error handling in code
>>>>>>>> samples is one of the most common and harmful practices in the software
>>>>>>>> development industry -- doing it is not "optional" or "advanced", it is
>>>>>>>> mandatory unless you want to be pwned.
>>>>>>>>
>>>>>>>> Developers need to start doing things properly from the very
>>>>>>>> beginning, as habits become harder and harder to change with experience.
>>>>>>>>
>>>>>>>>
>>>>>>>> On Wed, Mar 6, 2013 at 7:33 AM, Benji <me@...ji.com> wrote:
>>>>>>>>
>>>>>>>>> Actually, adding input sanitisation really wouldnt increase the
>>>>>>>>> code size that much. Are you just incompetent?
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Wed, Mar 6, 2013 at 7:46 AM, Źmicier Januszkiewicz <
>>>>>>>>> gauri@....by> wrote:
>>>>>>>>>
>>>>>>>>>> Dear list,
>>>>>>>>>>
>>>>>>>>>> Well, I suppose this had to be a proof-of-concept piece of code
>>>>>>>>>> to demonstrate how port scanning can be done in PHP, not a production-grade
>>>>>>>>>> software. Adding input sanitization would increase the code size by a lot
>>>>>>>>>> and obscure the concept somewhat (not that there is much to be said anout
>>>>>>>>>> the concept though). Think we can give the dude some discount for that.
>>>>>>>>>>
>>>>>>>>>> Nevertheless, seeing something like this coming from "Certified
>>>>>>>>>> Ethical Hacker and Security + certified" makes me doubt the worthness of
>>>>>>>>>> those certificates. Could be nice to know the exact naming of those
>>>>>>>>>> certificates to properly disregard them in the future.
>>>>>>>>>>
>>>>>>>>>> With best regards,
>>>>>>>>>> Z.
>>>>>>>>>>
>>>>>>>>>> 2013/3/6 laurent gaffie <laurent.gaffie@...il.com>
>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> http://resources.infosecinstitute.com/php-build-your-own-mini-port-scanner/
>>>>>>>>>>>
>>>>>>>>>>> Finding the vulnerability in this code is left as an exercise to
>>>>>>>>>>> the reader.
>>>>>>>>>>>
>>>>>>>>>>> PS: "*Your comment will be awaiting moderation forever."*
>>>>>>>>>>>
>>>>>>>>>>> _______________________________________________
>>>>>>>>>>> Full-Disclosure - We believe in it.
>>>>>>>>>>> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
>>>>>>>>>>> Hosted and sponsored by Secunia - http://secunia.com/
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> _______________________________________________
>>>>>>>>>> Full-Disclosure - We believe in it.
>>>>>>>>>> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
>>>>>>>>>> Hosted and sponsored by Secunia - http://secunia.com/
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> _______________________________________________
>>>>>>>>> Full-Disclosure - We believe in it.
>>>>>>>>> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
>>>>>>>>> Hosted and sponsored by Secunia - http://secunia.com/
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> “If debugging is the process of removing software bugs, then
>>>>>>>> programming must be the process of putting them in.” - *Edsger
>>>>>>>> Dijkstra*
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>> Full-Disclosure - We believe in it.
>>>>>>>> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
>>>>>>>> Hosted and sponsored by Secunia - http://secunia.com/
>>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> Full-Disclosure - We believe in it.
>>>>>>> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
>>>>>>> Hosted and sponsored by Secunia - http://secunia.com/
>>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> “If debugging is the process of removing software bugs, then
>>>>> programming must be the process of putting them in.” - *Edsger
>>>>> Dijkstra*
>>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> Full-Disclosure - We believe in it.
>>>> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
>>>> Hosted and sponsored by Secunia - http://secunia.com/
>>>>
>>>
>>>
>>> _______________________________________________
>>> Full-Disclosure - We believe in it.
>>> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
>>> Hosted and sponsored by Secunia - http://secunia.com/
>>>
>>
>>
>> _______________________________________________
>> Full-Disclosure - We believe in it.
>> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
>> Hosted and sponsored by Secunia - http://secunia.com/
>>
>
>

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