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TITLE:
Moodle KSES HTML Filter Bypass Vulnerability

SECUNIA ADVISORY ID:
SA30986

VERIFY ADVISORY:
http://secunia.com/advisories/30986/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
>From remote

SOFTWARE:
Moodle 1.8.x
http://secunia.com/product/14721/

DESCRIPTION:
Some vulnerabilities have been reported in Moodle, which can be
exploited by malicious people to bypass certain security
restrictions.

The vulnerabilities is caused due to insufficient filtering functions
within /lib/kses.php and lib/weblib.php and can be exploited to bypass
HTML filtering policies.

The vulnerabilities are reported in versions prior to 1.8.5.

SOLUTION:
Update to version 1.8.5 or upgrade to version 1.9.

The vendor recommends to use the option "Use HTML Purifier" in
version 1.9.

PROVIDED AND/OR DISCOVERED BY:
Lukasz Pilorz, Allegro.pl

ORIGINAL ADVISORY:
http://moodle.org/mod/forum/discuss.php?d=95031

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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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Definitions: (Criticality, Where etc.)
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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.

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