Scientific Linux Security Update : samba4 on SL6.x i386/x86_64 (20160107)

high Nessus Plugin ID 87842

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Synopsis

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

Description

A denial of service flaw was found in the LDAP server provided by the AD DC in the Samba process daemon. A remote attacker could exploit this flaw by sending a specially crafted packet, which could cause the server to consume an excessive amount of memory and crash.
(CVE-2015-7540)

Multiple buffer over-read flaws were found in the way Samba handled malformed inputs in certain encodings. An authenticated, remote attacker could possibly use these flaws to disclose portions of the server memory. (CVE-2015-5330)

A man-in-the-middle vulnerability was found in the way 'connection signing' was implemented by Samba. A remote attacker could use this flaw to downgrade an existing Samba client connection and force the use of plain text. (CVE-2015-5296)

A missing access control flaw was found in Samba. A remote, authenticated attacker could use this flaw to view the current snapshot on a Samba share, despite not having DIRECTORY_LIST access rights. (CVE-2015-5299)

An access flaw was found in the way Samba verified symbolic links when creating new files on a Samba share. A remote attacker could exploit this flaw to gain access to files outside of Samba's share path.
(CVE-2015-5252)

After installing this update, the smb service will be restarted automatically.

Solution

Update the affected packages.

Plugin Details

Severity: High

ID: 87842

File Name: sl_20160107_samba4_on_SL6_x.nasl

Version: 2.8

Type: local

Agent: unix

Family: Scientific Linux Local Security Checks

Published: 1/11/2016

Updated: 1/14/2021

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.8

CVSS v2

Risk Factor: Medium

Base Score: 5

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

CVSS v3

Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:fermilab:scientific_linux:samba4, p-cpe:/a:fermilab:scientific_linux:samba4-client, p-cpe:/a:fermilab:scientific_linux:samba4-common, p-cpe:/a:fermilab:scientific_linux:samba4-dc, p-cpe:/a:fermilab:scientific_linux:samba4-dc-libs, p-cpe:/a:fermilab:scientific_linux:samba4-debuginfo, p-cpe:/a:fermilab:scientific_linux:samba4-devel, p-cpe:/a:fermilab:scientific_linux:samba4-libs, p-cpe:/a:fermilab:scientific_linux:samba4-pidl, p-cpe:/a:fermilab:scientific_linux:samba4-python, p-cpe:/a:fermilab:scientific_linux:samba4-swat, p-cpe:/a:fermilab:scientific_linux:samba4-test, p-cpe:/a:fermilab:scientific_linux:samba4-winbind, p-cpe:/a:fermilab:scientific_linux:samba4-winbind-clients, p-cpe:/a:fermilab:scientific_linux:samba4-winbind-krb5-locator, x-cpe:/o:fermilab:scientific_linux

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

Patch Publication Date: 1/7/2016

Vulnerability Publication Date: 12/29/2015

Reference Information

CVE: CVE-2015-5252, CVE-2015-5296, CVE-2015-5299, CVE-2015-5330, CVE-2015-7540

Detections

Analytics