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TITLE:
Drupal Node Access User Reference Module Security Bypass

SECUNIA ADVISORY ID:
SA34955

VERIFY ADVISORY:
http://secunia.com/advisories/34955/

DESCRIPTION:
A security issue has been reported in the Node Access User Reference
module for Drupal, which can be exploited by malicious people to
bypass certain security restrictions.

The security issue is caused due to an error when granting node
access where the CCK user reference has an empty value. This results
in Node Access User Reference granting access to the anonymous user,
which can be exploited to view or author the node without
authentication and authorisation.

The security issue is reported in 5.x prior to version 5.x-2.0-beta4
and 6.x prior to version 6.x-2.0-beta6.

SOLUTION:
The security issue is fixed in version 5.x-2.0-beta4 and
6.x-2.0-beta6.
http://drupal.org/node/448390
http://drupal.org/node/448392

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Jakub Suchy of the Drupal security team and Bob
Geiger.

ORIGINAL ADVISORY:
SA-CONTRIB-2009-024:
http://drupal.org/node/449030

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About:
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