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www.waraxe.us Forum Index -> PhpBB -> 2.0.19 vulnerablilty ???
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2.0.19 vulnerablilty ???
PostPosted: Sun Jan 08, 2006 10:11 pm Reply with quote
rohit507
Beginner
Beginner
 
Joined: Dec 22, 2005
Posts: 3




Details: SecurityAlert
Topic : phpBB 2.0.19 XSS
SecurityAlert Id : 313
CVE : CVE-2006-0063
SecurityRisk : Medium
Remote Exploit : Yes
Local Exploit : No
Exploit Given : Yes
Credit : Maksymilian Arciemowicz
Date : 5.1.2006

Affected Software : phpBB 2.0.19 and prior

Advisory Text :

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

[phpBB 2.0.19 XSS cXIb8O3.23]

Author: Maksymilian Arciemowicz (cXIb8O3)
Date: 6.1.2006
from SecurityReason.Com
CVE : CVE-2006-0063

- --- 0.Description ---
phpBB is a high powered, fully scalable, and highly customizable Open Source bulletin boar
d package. phpBB has a user-friendly interface, simple and straightforward administration
panel, and helpful FAQ. Based on the powerful PHP server language and your choice of MySQL
, MS-SQL, PostgreSQL or Access/ODBC database servers, phpBB is the ideal free community so
lution for all web sites.
Contact with author http://www.phpbb.com/about.php.

- --- 1. XSS ---
If in phpbb is Allowed HTML tags "ON" like b,i,u,pre and have you in profile "Always al
low HTML: YES" or are you Guest

This issue is in phpBB 2.0.19 .
Some Details :
Old exploit for x <= 2.0.18 was (http://securityreason.com/achievement_securityalert/29) :

<B C=">" onmouseover="alert('SecurityReason.Com')" X="<B "> H E L O </B>

New exploit for x <= 2.0.19 is :
<B C='>' onmouseover='alert("SecurityReason.Com")' X='<B '> SecurityReason.Com </B
>

The exploits are simillar but not the same ! As you can notice the " is replaced to '
In new version phpBB they only filter " but not '

that you can use this tags:

<B C='>' onmouseover='alert("SecurityReason.Com")' X='<B '> SecurityReason.Com </B
>

Exploit:

<B C='>' onmouseover='alert(document.location="http://SecurityReason.Com")' X='<B
'> SecurityReason.Com </B>


- ---
SecurityReason Note :

According to http://www.phpbb.com/phpBB/viewtopic.php?t=352966
[Sec] fixed XSS issue (only valid for Internet Explorer) within the url bbcode
[Sec] fixed XSS issue (only valid for Internet Explorer) if html tags are allowed and enab
led
SecurityReason tested this issue before public advisory :
http://securityreason.com/achievement_securityalert/29
and the XSS is working on :
- -> Mozilla
- -> Internet Explorer ( so !not! only valid Internet Explorer)
- -> Opera
- -> Firefox
- -> Links
As proof SecurityReason show examples of working XSS on screens :
http://securityreason.com/downloads/mozilla.png -> Mozilla
http://securityreason.com/downloads/opera.png -> Opera
http://securityreason.com/downloads/firefox.png -> Firefox
http://securityreason.com/downloads/links.png -> Links
- ---

We have reported this bug to phpbb bugtraq and:

phpBB Team respone :
- --------------------
...
we do not intended to fix the previous issue in 2.0.19 (it was just preventing it by the q
uote change, which was good - but we intended this change
because of other forseeable issues) - and i do not intend to fix this one. HTML is and was
always "bad" and has been stated as being
able to be entered "as is". In olympus we will therefore remove html support completely
...
- --------------------


So Solusion is:

phpBB Team respone :
- -------------------
I already said we will fix it in CVS but do not see the need to release a new version imme
diatly.
- -------------------

So there is no fix for this .
Only way to protect is :

Allow HTML = Off

- --- 2. Greets ---
sp3x

- --- 3.Contact ---
Author: SecurityReason.Com [ Maksymilian Arciemowicz ( cXIb8O3 ) ]
Email: max [at] jestsuper [dot] pl or cxib [at] securityreason [dot] com
GPG: http://securityreason.com/key/Arciemowicz.Maksymilian.gpg
SecurityReason.Com
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.2 (FreeBSD)

iD8DBQFDvSzX3Ke13X/fTO4RAqlOAJ9eX7rok/p3Q0VHmYP8J21h26PvpgCbBGmJ
mGGvK34tnNCl1WdnpZxfAcY=
=dyrx
-----END PGP SIGNATURE-----

hmmm i found this on Security reason, it seems similar to the cookies grabber in 2.0.18 eairlier. noone wants to fix it, soo how would i exploit this to grab a cookie?(if i can) if not how would i explot this?
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PostPosted: Mon Jan 09, 2006 12:27 am Reply with quote
WaterBird
Active user
Active user
 
Joined: May 16, 2005
Posts: 37




watch http://kisobox.com/area51/phpbb2.0.16xss/ and try figure it out
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PostPosted: Fri Jan 13, 2006 12:49 am Reply with quote
is0t0pe
Regular user
Regular user
 
Joined: Jan 10, 2006
Posts: 13




Anyone confirm this is working?
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2.0.19 vulnerablilty ???
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