CentOS 6 : samba4 (CESA-2017:1271) (SambaCry)

critical Nessus Plugin ID 100429
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote CentOS host is missing one or more security updates.

Description

An update for samba4 is now available for Red Hat Enterprise Linux 6.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) 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.

Security Fix(es) :

* A remote code execution flaw was found in Samba. A malicious authenticated samba client, having write access to the samba share, could use this flaw to execute arbitrary code as root. (CVE-2017-7494)

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

Solution

Update the affected samba4 packages.

See Also

http://www.nessus.org/u?56ca4818

Plugin Details

Severity: Critical

ID: 100429

File Name: centos_RHSA-2017-1271.nasl

Version: 3.17

Type: local

Agent: unix

Published: 5/26/2017

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2017-7494

VPR

Risk Factor: Critical

Score: 9.6

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

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

Temporal Vector: E:F/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

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

Temporal Vector: E:F/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:centos:centos:samba4, p-cpe:/a:centos:centos:samba4-client, p-cpe:/a:centos:centos:samba4-common, p-cpe:/a:centos:centos:samba4-dc, p-cpe:/a:centos:centos:samba4-dc-libs, p-cpe:/a:centos:centos:samba4-devel, p-cpe:/a:centos:centos:samba4-libs, p-cpe:/a:centos:centos:samba4-pidl, p-cpe:/a:centos:centos:samba4-python, p-cpe:/a:centos:centos:samba4-test, p-cpe:/a:centos:centos:samba4-winbind, p-cpe:/a:centos:centos:samba4-winbind-clients, p-cpe:/a:centos:centos:samba4-winbind-krb5-locator, cpe:/o:centos:centos:6

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/25/2017

Vulnerability Publication Date: 5/30/2017

Exploitable With

CANVAS (CANVAS)

Core Impact

Metasploit (Samba is_known_pipename() Arbitrary Module Load)

Reference Information

CVE: CVE-2017-7494

RHSA: 2017:1271