Secunia Security Advisory - rgod has discovered some vulnerabilities in Gravity Board X, which can be exploited by malicious people to conduct cross-site scripting attacks, bypass certain security restrictions, or compromise a vulnerable system.
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TITLE:
Gravity Board X Multiple Vulnerabilities
SECUNIA ADVISORY ID:
SA16342
VERIFY ADVISORY:
http://secunia.com/advisories/16342/
CRITICAL:
Highly critical
IMPACT:
Security Bypass, Cross Site Scripting, Manipulation of data, System
access
WHERE:
>From remote
SOFTWARE:
Gravity Board X (GBX) 1.x
http://secunia.com/product/5507/
DESCRIPTION:
rgod has discovered some vulnerabilities in Gravity Board X, which
can be exploited by malicious people to conduct cross-site scripting
attacks, bypass certain security restrictions, or compromise a
vulnerable system.
1) Input passed to the "email" parameter in index.php isn't properly
sanitised before being used in a SQL query. This can be exploited to
manipulate SQL queries by injecting arbitrary SQL code.
Successful exploitation allows logon as administrator without
requiring knowledge of the password, but requires that
"magic_quotes_gpc" is disabled.
2) Input passed to the "board_id" parameter in deletethread.php isn't
properly sanitised before being returned to users. This can be
exploited to execute arbitrary HTML and script code in a user's
browser session in context of an affected site.
3) Missing access restrictions on the "editcss.php" script can be
exploited to include arbitrary PHP scripts in the style sheet.
The vulnerabilities have been confirmed in version 1.1. Other
versions may also be affected.
SOLUTION:
Edit the source code to ensure that input is properly verified and
PHP scripts are removed before saving the updated style sheet.
PROVIDED AND/OR DISCOVERED BY:
rgod
ORIGINAL ADVISORY:
http://www.rgod.altervista.org/gravity.html
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