Oracle Linux 5 / 6 : samba / samba3x (ELSA-2012-0533)

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Synopsis :

The remote Oracle Linux host is missing one or more security updates.

Description :

From Red Hat Security Advisory 2012:0533 :

Updated samba3x and samba packages that fix one security issue are now
available for Red Hat Enterprise Linux 5 and 6 respectively.

The Red Hat Security Response Team has rated this update as having
important security impact. A Common Vulnerability Scoring System
(CVSS) base score, which gives a detailed severity rating, is
available from the CVE link in the References section.

Samba is an open source implementation of the Server Message Block
(SMB) or Common Internet File System (CIFS) protocol, which allows
PC-compatible machines to share files, printers, and other
information.

A flaw was found in the way Samba handled certain Local Security
Authority (LSA) Remote Procedure Calls (RPC). An authenticated user
could use this flaw to issue an RPC call that would modify the
privileges database on the Samba server, allowing them to steal the
ownership of files and directories that are being shared by the Samba
server, and create, delete, and modify user accounts, as well as other
Samba server administration tasks. (CVE-2012-2111)

Red Hat would like to thank the Samba project for reporting this
issue. Upstream acknowledges Ivano Cristofolini as the original
reporter.

Users of Samba are advised to upgrade to these updated packages, which
contain a backported patch to resolve this issue. After installing
this update, the smb service will be restarted automatically.

See also :

https://oss.oracle.com/pipermail/el-errata/2012-May/002783.html
https://oss.oracle.com/pipermail/el-errata/2012-May/002784.html

Solution :

Update the affected samba and / or samba3x packages.

Risk factor :

Medium / CVSS Base Score : 6.5
(CVSS2#AV:N/AC:L/Au:S/C:P/I:P/A:P)
CVSS Temporal Score : 5.7
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false

Family: Oracle Linux Local Security Checks

Nessus Plugin ID: 68521 ()

Bugtraq ID: 53307

CVE ID: CVE-2012-2111