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UBB.threads Multiple Vulnerabilities
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Secunia Advisory:
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SA20353
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Release Date:
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2006-05-30
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Last Update:
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2006-10-03
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Popularity:
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5,539 views
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Critical:
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Highly critical
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Impact:
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Cross Site Scripting
Manipulation of data
System access
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Where:
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From remote
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Solution Status:
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Unpatched
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| Software: | UBB.threads 5.x
UBB.threads 6.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2006-2755
CVE-2006-2675
CVE-2006-5136
CVE-2006-5137
CVE-2006-5138
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Description:
Some vulnerabilities have been discovered in UBB.threads, which can be exploited by malicious people to conduct cross-site scripting attacks and compromise a vulnerable system.
1) Input passed to the "myprefs[language]" parameter in includepollresults.php isn't properly verified, before it is used to include files. This can be exploited to include arbitrary files from local resources.
Successful exploitation requires that "register_globals" is enabled and "magic_quotes_gpc" is disabled.
2) Input passed to the "thispath" and "configdir" parameters in ubbt.inc.php isn't properly verified, before it is used to include files. This can be exploited to include arbitrary files from external and local resources.
Example:
http://[host]/ubbt.inc.php?GLOBALS[thispath]=[file]
http://[host]/ubbt.inc.php?GLOBALS[configdir]=[file]
Successful exploitation requires that "register_globals" is enabled, and that PHP 5.x or PHP versions prior to 4.1.0 is used.
3) Input passed to the "debug" parameter in ubbthreads.php and other scripts is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session on context of an affected site.
The vulnerabilities have been confirmed in version 6.5.1.1 (trial) and also reported in version 5.x. Other versions may also be affected.
4) Input passed to the "thispath" parameter in admin/doedittheme.php and admin/doeditconfig.php is not properly sanitised before being used. This can be exploited to overwrite arbitrary files on the system with privileges of the web server via directory traversal attacks.
5) Input passed to the "theme[]" parameter in admin/doedittheme.php and to the "config[]" parameter in admin/doeditconfig.php is not properly sanitised before being stored in a file. In combination with #4 this can be exploited to inject and execute arbitrary PHP code on a vulnerable system.
Successful exploitation requires that "register_globals" is enabled and "magic_quotes_gpc" is disabled.
The vulnerabilities have been confirmed in version 6.5.1.1 (trial). Other versions may also be affected.
Solution:
Edit the source code to ensure that input is properly sanitised and verified.
Set "register_globals" to "Off".
Provided and/or discovered by:
1,2,3) Mustafa Can Bjorn
3,4,5) HACKERS PAL
Changelog:
2006-06-08: Added CVE reference.
2006-08-04: Added CVE reference.
2006-10-02: Updated "Title" and "Description" section. Added additional information about vulnerabilities provided by HACKERS PAL.
2006-10-03: Added CVE references.
Original Advisory:
1-3) http://www.nukedx.com/?viewdoc=40
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About this Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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