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List: full-disclosure
Subject: Re: [Full-disclosure] Vulnerabilities in MaxSite Anti Spam Image
From: John Belushae <john.belushae () gmail ! com>
Date: 2011-03-31 12:35:50
Message-ID: AANLkTinKXEZSVnzBzsmrMrz2a8BQFp1+Gz4NZKVag5as () mail ! gmail ! com
[Download RAW message or body]
[Attachment #2 (multipart/alternative)]
Hello Mueslix !
I want to warm you about Insufficient Content Filtering on FD.
------------
Timeline:
------------
2005.12.24 - Mueslix got a computer
2005.12.31 - His friends didn't want to go out with him, so he read owasp
instead
2006.01.02 - Found his first FDP
2011.03.29 - Still spaming this list with FDP, and an horribly broken En.
On Thu, Mar 31, 2011 at 11:22 PM, MustLive <mustlive@websecurity.com.ua>wrote:
> Hello list!
>
> I want to warn you about Insufficient Anti-automation vulnerability in
> MaxSite Anti Spam Image plugin for WordPress.
>
> This is modified version of original plugin Anti Spam Image, about
> vulnerability in which I wrote in 2007 in my project Month of Bugs in
> Captchas. This captcha is vulnerable to session reusing with constant
> captcha bypass method, like original Anti Spam Image, on which base this
> plugin is made.
>
> -------------------------
> Affected products:
> -------------------------
>
> Vulnerable are MaxSite Anti Spam Image 0.6 and potentially all other
> versions of this plugin.
>
> ----------
> Details:
> ----------
>
> Insufficient Anti-automation (WASC-21):
>
> Exploit:
>
>
> http://websecurity.com.ua/uploads/2011/MaxSite%20Anti%20Spam%20Image%20CAPTCHA%20bypass.html
>
> Vulnerability has place on old versions of PHP. It shows only in PHP <
> 4.4.7, which has bug which leads to error in work of web application's
> algorithm, which leads to possibility of captcha bypass.
>
> ------------
> Timeline:
> ------------
>
> 2007.12.01 - found vulnerability.
> 2007.12.01 - informed developer.
> 2011.03.29 - disclosed at my site.
>
> I mentioned about this vulnerability at my site
> (http://websecurity.com.ua/5045/).
>
> Best wishes & regards,
> MustLive
> Administrator of Websecurity web site
> http://websecurity.com.ua
>
>
> _______________________________________________
> Full-Disclosure - We believe in it.
> Charter: http://lists.grok.org.uk/full-disclosure-charter.html
> Hosted and sponsored by Secunia - http://secunia.com/
>
[Attachment #5 (text/html)]
Hello Mueslix !<div><br></div><div>I want to warm you about <meta http-equiv="content-type" \
content="text/html; charset=utf-8">Insufficient Content Filtering on FD.<br><meta \
http-equiv="content-type" content="text/html; charset=utf-8"><br>
------------<br>Timeline:<br>------------<br><br>2005.12.24 - Mueslix got a computer</div><meta \
http-equiv="content-type" content="text/html; charset=utf-8"><div>2005.12.31 - His friends \
didn't want to go out with him, so he read owasp instead</div> <div>2006.01.02 - Found his \
first FDP<br>2011.03.29 - Still spaming this list with FDP, and an horribly broken \
En.<br><br></div><div><br><div class="gmail_quote">On Thu, Mar 31, 2011 at 11:22 PM, MustLive \
<span dir="ltr"><<a \
href="mailto:mustlive@websecurity.com.ua">mustlive@websecurity.com.ua</a>></span> wrote:<br> \
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex;">Hello list!<br> <br>
I want to warn you about Insufficient Anti-automation vulnerability in<br>
MaxSite Anti Spam Image plugin for WordPress.<br>
<br>
This is modified version of original plugin Anti Spam Image, about<br>
vulnerability in which I wrote in 2007 in my project Month of Bugs in<br>
Captchas. This captcha is vulnerable to session reusing with constant<br>
captcha bypass method, like original Anti Spam Image, on which base this<br>
plugin is made.<br>
<br>
-------------------------<br>
Affected products:<br>
-------------------------<br>
<br>
Vulnerable are MaxSite Anti Spam Image 0.6 and potentially all other<br>
versions of this plugin.<br>
<br>
----------<br>
Details:<br>
----------<br>
<br>
Insufficient Anti-automation (WASC-21):<br>
<br>
Exploit:<br>
<br>
<a href="http://websecurity.com.ua/uploads/2011/MaxSite%20Anti%20Spam%20Image%20CAPTCHA%20bypass.html" \
target="_blank">http://websecurity.com.ua/uploads/2011/MaxSite%20Anti%20Spam%20Image%20CAPTCHA%20bypass.html</a><br>
<br>
Vulnerability has place on old versions of PHP. It shows only in PHP <<br>
4.4.7, which has bug which leads to error in work of web application's<br>
algorithm, which leads to possibility of captcha bypass.<br>
<br>
------------<br>
Timeline:<br>
------------<br>
<br>
2007.12.01 - found vulnerability.<br>
2007.12.01 - informed developer.<br>
2011.03.29 - disclosed at my site.<br>
<br>
I mentioned about this vulnerability at my site<br>
(<a href="http://websecurity.com.ua/5045/" \
target="_blank">http://websecurity.com.ua/5045/</a>).<br> <br>
Best wishes & regards,<br>
MustLive<br>
Administrator of Websecurity web site<br>
<a href="http://websecurity.com.ua" target="_blank">http://websecurity.com.ua</a><br>
<br>
<br>
_______________________________________________<br>
Full-Disclosure - We believe in it.<br>
Charter: <a href="http://lists.grok.org.uk/full-disclosure-charter.html" \
target="_blank">http://lists.grok.org.uk/full-disclosure-charter.html</a><br> Hosted and \
sponsored by Secunia - <a href="http://secunia.com/" \
target="_blank">http://secunia.com/</a><br> </blockquote></div><br></div>
_______________________________________________
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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