RHEL 6 : samba4 (RHSA-2015:0255)

This script is Copyright (C) 2015-2017 Tenable Network Security, Inc.


Synopsis :

The remote Red Hat host is missing one or more security updates.

Description :

Updated samba4 packages that fix one security issue are now available
for Red Hat Enterprise Linux 6.4 and 6.5 Extended Update Support.

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

An uninitialized pointer use flaw was found in the Samba daemon
(smbd). A malicious Samba client could send specially crafted netlogon
packets that, when processed by smbd, could potentially lead to
arbitrary code execution with the privileges of the user running smbd
(by default, the root user). (CVE-2015-0240)

For additional information about this flaw, see the Knowledgebase
article at https://access.redhat.com/articles/1346913

Red Hat would like to thank the Samba project for reporting this
issue. Upstream acknowledges Richard van Eeden of Microsoft
Vulnerability Research as the original reporter of this issue.

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

See also :

https://www.redhat.com/security/data/cve/CVE-2015-0240.html
https://access.redhat.com/articles/1346913
http://rhn.redhat.com/errata/RHSA-2015-0255.html

Solution :

Update the affected packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 8.3
(CVSS2#E:F/RL:OF/RC:ND)
Public Exploit Available : true

Family: Red Hat Local Security Checks

Nessus Plugin ID: 81474 ()

Bugtraq ID: 72711

CVE ID: CVE-2015-0240

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