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RHEL 6 : samba4 (RHSA-2015:0255)

critical Nessus Plugin ID 81474

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Synopsis

The remote Red Hat host is missing a security update for samba4.

Description

The remote Redhat Enterprise Linux 6 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2015:0255 advisory.

 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.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL samba4 package based on the guidance in RHSA-2015:0255.

See Also

http://www.nessus.org/u?935846e6

https://access.redhat.com/articles/1346913

https://access.redhat.com/errata/RHSA-2015:0255

https://access.redhat.com/security/updates/classification/#critical

https://bugzilla.redhat.com/show_bug.cgi?id=1191325

Plugin Details

Severity: Critical

ID: 81474

File Name: redhat-RHSA-2015-0255.nasl

Version: 1.22

Type: local

Agent: unix

Published: 2/24/2015

Updated: 11/4/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Critical

Score: 9.2

Vendor

Vendor Severity: Critical

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2015-0240

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.4

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:samba4-dc-libs, p-cpe:/a:redhat:enterprise_linux:samba4-python, p-cpe:/a:redhat:enterprise_linux:samba4, p-cpe:/a:redhat:enterprise_linux:samba4-winbind-clients, p-cpe:/a:redhat:enterprise_linux:samba4-swat, cpe:/o:redhat:rhel_eus:6.4, p-cpe:/a:redhat:enterprise_linux:samba4-winbind-krb5-locator, p-cpe:/a:redhat:enterprise_linux:samba4-devel, p-cpe:/a:redhat:enterprise_linux:samba4-dc, p-cpe:/a:redhat:enterprise_linux:samba4-client, p-cpe:/a:redhat:enterprise_linux:samba4-libs, cpe:/o:redhat:rhel_eus:6.5, p-cpe:/a:redhat:enterprise_linux:samba4-pidl, p-cpe:/a:redhat:enterprise_linux:samba4-winbind, p-cpe:/a:redhat:enterprise_linux:samba4-test, p-cpe:/a:redhat:enterprise_linux:samba4-common

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2/23/2015

Vulnerability Publication Date: 2/24/2015

Reference Information

CVE: CVE-2015-0240

BID: 72711

CWE: 119

RHSA: 2015:0255