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[RHSA-2016:0447-01] Moderate: samba security and bug fix update



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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Moderate: samba security and bug fix update
Advisory ID:       RHSA-2016:0447-01
Product:           Red Hat Gluster Storage
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2016-0447.html
Issue date:        2016-03-15
CVE Names:         CVE-2015-7560 
=====================================================================

1. Summary:

Updated samba packages that fix one security issue and one bug are now
available for Red Hat Gluster Storage 3.1 for Red Hat Enterprise Linux 6
and 7.

Red Hat Product Security has rated this update as having Moderate 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.

2. Relevant releases/architectures:

Red Hat Gluster 3 Samba on RHEL-6 - noarch, x86_64
Red Hat Gluster 3 Samba on RHEL-7 - noarch, x86_64

3. Description:

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 ACLs on symbolic links.
An authenticated user could use this flaw to gain access to an arbitrary
file or directory by overwriting its ACL. (CVE-2015-7560)

Red Hat would like to thank the Samba project for reporting this issue.
Upstream acknowledges Jeremy Allison (Google) and the Samba team as the
original reporters.

This update also fixes the following bug:

* Under a high load, the vfs_glusterfs AIO code would hit a use-after-free
error and cause a crash. This update fixes the affected code, and crashes
no longer occur. (BZ #1315736)

All samba users are advised to upgrade to these updated packages, which
contain backported patches to correct these issues. After installing this
update, the smb service will be restarted automatically.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1309992 - CVE-2015-7560 samba: Incorrect ACL get/set allowed on symlink path
1315736 - Use after free in vfs_glusterfs AIO code.

6. Package List:

Red Hat Gluster 3 Samba on RHEL-6:

Source:
samba-4.2.4-15.el6rhs.src.rpm

noarch:
samba-common-4.2.4-15.el6rhs.noarch.rpm
samba-pidl-4.2.4-15.el6rhs.noarch.rpm

x86_64:
ctdb-4.2.4-15.el6rhs.x86_64.rpm
ctdb-devel-4.2.4-15.el6rhs.x86_64.rpm
ctdb-tests-4.2.4-15.el6rhs.x86_64.rpm
libsmbclient-4.2.4-15.el6rhs.x86_64.rpm
libsmbclient-devel-4.2.4-15.el6rhs.x86_64.rpm
libwbclient-4.2.4-15.el6rhs.x86_64.rpm
libwbclient-devel-4.2.4-15.el6rhs.x86_64.rpm
samba-4.2.4-15.el6rhs.x86_64.rpm
samba-client-4.2.4-15.el6rhs.x86_64.rpm
samba-client-libs-4.2.4-15.el6rhs.x86_64.rpm
samba-common-libs-4.2.4-15.el6rhs.x86_64.rpm
samba-common-tools-4.2.4-15.el6rhs.x86_64.rpm
samba-dc-4.2.4-15.el6rhs.x86_64.rpm
samba-dc-libs-4.2.4-15.el6rhs.x86_64.rpm
samba-debuginfo-4.2.4-15.el6rhs.x86_64.rpm
samba-devel-4.2.4-15.el6rhs.x86_64.rpm
samba-libs-4.2.4-15.el6rhs.x86_64.rpm
samba-python-4.2.4-15.el6rhs.x86_64.rpm
samba-test-4.2.4-15.el6rhs.x86_64.rpm
samba-test-devel-4.2.4-15.el6rhs.x86_64.rpm
samba-test-libs-4.2.4-15.el6rhs.x86_64.rpm
samba-vfs-glusterfs-4.2.4-15.el6rhs.x86_64.rpm
samba-winbind-4.2.4-15.el6rhs.x86_64.rpm
samba-winbind-clients-4.2.4-15.el6rhs.x86_64.rpm
samba-winbind-krb5-locator-4.2.4-15.el6rhs.x86_64.rpm
samba-winbind-modules-4.2.4-15.el6rhs.x86_64.rpm

Red Hat Gluster 3 Samba on RHEL-7:

Source:
samba-4.2.4-15.el7rhgs.src.rpm

noarch:
samba-common-4.2.4-15.el7rhgs.noarch.rpm
samba-pidl-4.2.4-15.el7rhgs.noarch.rpm

x86_64:
ctdb-4.2.4-15.el7rhgs.x86_64.rpm
ctdb-devel-4.2.4-15.el7rhgs.x86_64.rpm
ctdb-tests-4.2.4-15.el7rhgs.x86_64.rpm
libsmbclient-4.2.4-15.el7rhgs.x86_64.rpm
libsmbclient-devel-4.2.4-15.el7rhgs.x86_64.rpm
libwbclient-4.2.4-15.el7rhgs.x86_64.rpm
libwbclient-devel-4.2.4-15.el7rhgs.x86_64.rpm
samba-4.2.4-15.el7rhgs.x86_64.rpm
samba-client-4.2.4-15.el7rhgs.x86_64.rpm
samba-client-libs-4.2.4-15.el7rhgs.x86_64.rpm
samba-common-libs-4.2.4-15.el7rhgs.x86_64.rpm
samba-common-tools-4.2.4-15.el7rhgs.x86_64.rpm
samba-dc-4.2.4-15.el7rhgs.x86_64.rpm
samba-dc-libs-4.2.4-15.el7rhgs.x86_64.rpm
samba-debuginfo-4.2.4-15.el7rhgs.x86_64.rpm
samba-devel-4.2.4-15.el7rhgs.x86_64.rpm
samba-libs-4.2.4-15.el7rhgs.x86_64.rpm
samba-python-4.2.4-15.el7rhgs.x86_64.rpm
samba-test-4.2.4-15.el7rhgs.x86_64.rpm
samba-test-devel-4.2.4-15.el7rhgs.x86_64.rpm
samba-test-libs-4.2.4-15.el7rhgs.x86_64.rpm
samba-vfs-glusterfs-4.2.4-15.el7rhgs.x86_64.rpm
samba-winbind-4.2.4-15.el7rhgs.x86_64.rpm
samba-winbind-clients-4.2.4-15.el7rhgs.x86_64.rpm
samba-winbind-krb5-locator-4.2.4-15.el7rhgs.x86_64.rpm
samba-winbind-modules-4.2.4-15.el7rhgs.x86_64.rpm

These packages are GPG signed by Red Hat for security.  Our key and
details on how to verify the signature are available from
https://access.redhat.com/security/team/key/

7. References:

https://access.redhat.com/security/cve/CVE-2015-7560
https://access.redhat.com/security/updates/classification/#moderate

8. Contact:

The Red Hat security contact is <secalert redhat com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2016 Red Hat, Inc.
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