nginx WebDAV Directory Traversal Security Issue

[Роман Веретельников]

Здравствуйте.

Пришло сегодня по рассылке Secunia:

TITLE:
nginx WebDAV Directory Traversal Security Issue

SECUNIA ADVISORY ID:
SA36818

VERIFY ADVISORY:
http://secunia.com/advisories/36818/

DESCRIPTION:
A security issue has been discovered in nginx, which can be exploited
by malicious people to bypass certain security restrictions.

The security issue is caused due to nginx not properly verifying the
path for the WebDAV "MOVE" and "COPY" methods, which can be exploited
to e.g. write to files outside the specified document root.

Successful exploitation requires that the server has been compiled
with the http_dav_module and that the attacker is allowed to use the
"MOVE" or "COPY" methods.

The security issue is reported in version 0.7.61 and confirmed in
version 0.7.62. Other versions may also be affected.

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Kingcope

ORIGINAL ADVISORY:
http://archives.neohapsis.com/archives/fulldisclosure/2009-09/0379.html

-- 
С уважением,
 Роман                          mailto:roman at rover.pp.ru