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TITLE:
KnowledgeQuest SQL Injection and Security Bypass

SECUNIA ADVISORY ID:
SA29716

VERIFY ADVISORY:
http://secunia.com/advisories/29716/

CRITICAL:
Moderately critical

IMPACT:
Security Bypass, Manipulation of data, Exposure of sensitive
information

WHERE:
>From remote

SOFTWARE:
KnowledgeQuest 2.x
http://secunia.com/product/18281/

DESCRIPTION:
Some vulnerabilities have been discovered in KnowledgeQuest, which
can be exploited by malicious people to conduct SQL injection attacks
or to bypass certain security restrictions.

1) Input passed to the "kqid" parameter in articletext.php and
articletextonly.php is not properly sanitised before being used in
SQL queries. This can be exploited to manipulate SQL queries by
injecting arbitrary SQL code.

Successful exploitation of this vulnerability allows e.g. retrieving
administrator usernames and passwords.

2) Input passed to the "username" parameter in logincheck.php is not
properly sanitised before being used in SQL queries. This can be
exploited to manipulate SQL queries by injecting arbitrary SQL code.

Successful exploitation of this vulnerability allows e.g. logging in
as administrator without valid administrator credentials, but
requires that "magic_quotes_gpc" is disabled.

3) A vulnerability is caused due to insufficient access restrictions
in the admincheck.php script. This can be exploited to add new
administrator users.

The vulnerabilities are confirmed in version 2.6. Other versions may
also be affected.

SOLUTION:
Edit the source code to ensure that input is properly sanitised.
Restrict access to the admincheck.php script (e.g. with ".htaccess").

PROVIDED AND/OR DISCOVERED BY:
1, 2) hadihadi, virangar security team
3) t0pP8uzz

ORIGINAL ADVISORY:
1, 2) http://milw0rm.com/exploits/5421
3) http://milw0rm.com/exploits/5418

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

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