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TITLE:
Samba Root File System Access Security Issue

SECUNIA ADVISORY ID:
SA33379

VERIFY ADVISORY:
http://secunia.com/advisories/33379/

CRITICAL:
Less critical

IMPACT:
Security Bypass

WHERE:
>From local network

SOFTWARE:
Samba 3.x
http://secunia.com/advisories/product/2999/

DESCRIPTION:
A security issue has been reported in Samba, which can be exploited
by malicious users to bypass certain security restrictions.

The problem is that access to the root file system is granted when
authenticated users connect to a share with an empty string as name,
and e.g. use an older version of smbclient.

Successful exploitation requires that "registry shares" is enabled.

NOTE: "registry shares" is implicitly set with "include = registry"
or "config backend = registry".

The security issue is reported in versions 3.2.0 through 3.2.6.

SOLUTION:
Update to version 3.2.7 or apply patch.
http://us6.samba.org/samba/ftp/stable/samba-3.2.7.tar.gz
http://us1.samba.org/samba/ftp/patches/security/samba-3.2.6-CVE-2009-0022.patch

PROVIDED AND/OR DISCOVERED BY:
The vendor credits Gunter Höckel.

ORIGINAL ADVISORY:
http://us1.samba.org/samba/security/CVE-2009-0022.html

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