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TITLE:
Drupal Cross-Site Request Forgery and Security Bypass

SECUNIA ADVISORY ID:
SA31460

VERIFY ADVISORY:
http://secunia.com/advisories/31460/

CRITICAL:
Less critical

IMPACT:
Security Bypass, Cross Site Scripting, Manipulation of data, Exposure
of sensitive information

WHERE:
>From remote

SOFTWARE:
Drupal 6.x
http://secunia.com/product/17839/

DESCRIPTION:
Two vulnerabilities have been reported in Drupal, which can be
exploited by malicious users to bypass certain security restrictions,
and by malicious people to conduct cross-site request forgeries.

1) A vulnerability is caused due to the application allowing users to
perform certain actions via HTTP requests without performing any
validity checks to verify the request. This can be exploited to
submit cached forms and forms containing AHAH elements and upload
files, by enticing a logged-in user to visit a malicious web page.

2) A vulnerability is caused due to improper access restriction in
the Upload module. This can be exploited to edit nodes, delete files,
and download attachments without having valid access rights.

Successful exploitation of this vulnerability requires valid user
credentials with the "upload files" permission.

The vulnerabilities are reported in all 6.x versions prior to 6.4.

SOLUTION:
Update to version 6.4.

PROVIDED AND/OR DISCOVERED BY:
1) Heine Deelstra, Drupal security team
2) Damien Tournoud and John Morahan, Drupal security team and
Caroline Schnapp

ORIGINAL ADVISORY:
DRUPAL-SA-2008-047:
http://drupal.org/node/295053

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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.

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.

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