Secunia Security Advisory - Mustafa Can Bjorn has discovered some vulnerabilities in UBB.threads, which can be exploited by malicious people to conduct cross-site scripting attacks and compromise a vulnerable system.
4a73e1a8aa146312216455363e458266626fa319ca8b1e35fad5f5327313f001
TITLE:
UBB.threads Cross-Site Scripting and File Inclusion
SECUNIA ADVISORY ID:
SA20353
VERIFY ADVISORY:
http://secunia.com/advisories/20353/
CRITICAL:
Highly critical
IMPACT:
Cross Site Scripting, System access
WHERE:
>From remote
SOFTWARE:
UBB.threads 6.x
http://secunia.com/product/4379/
UBB.threads 5.x
http://secunia.com/product/10214/
DESCRIPTION:
Mustafa Can Bjorn has discovered some vulnerabilities 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" parameter 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]
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.
SOLUTION:
Edit the source code to ensure that input is properly sanitised.
Set "register_globals" to "Off".
PROVIDED AND/OR DISCOVERED BY:
Mustafa Can Bjorn
ORIGINAL ADVISORY:
http://www.nukedx.com/?viewdoc=40
----------------------------------------------------------------------
About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.
Subscribe:
http://secunia.com/secunia_security_advisories/
Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/
Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.
----------------------------------------------------------------------