EulerOS 2.0 SP8 : samba (EulerOS-SA-2019-2116)

critical Nessus Plugin ID 130825

Synopsis

The remote EulerOS host is missing multiple security updates.

Description

According to the versions of the samba packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

- A flaw was found in samba versions 4.9.x up to 4.9.13, samba 4.10.x up to 4.10.8 and samba 4.11.x up to 4.11.0rc3, when certain parameters were set in the samba configuration file. An unauthenticated attacker could use this flaw to escape the shared directory and access the contents of directories outside the share.(CVE-2019-10197)

- A null pointer dereference flaw was found in the Samba DNS Management server when used as an Active Directory Domain Controller. A remote attacker could use this flaw to cause a denial of service (application crash).Samba from version 4.9.0 and before version 4.9.3 is vulnerable to a NULL pointer de-reference.
During the processing of an DNS zone in the DNS management DCE/RPC server, the internal DNS server or the Samba DLZ plugin for BIND9, if the DSPROPERTY_ZONE_MASTER_SERVERS property or DSPROPERTY_ZONE_SCAVENGING_SERVERS property is set, the server will follow a NULL pointer and terminate. There is no further vulnerability associated with this issue, merely a denial of service.(CVE-2018-16852)

- It was found that the 'bad password observation window' was ineffective when set to a value greater than 3 minutes. This could allow for brute force password attacks in some situations.(CVE-2018-16857)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected samba packages.

See Also

http://www.nessus.org/u?edf7d73b

Plugin Details

Severity: Critical

ID: 130825

File Name: EulerOS_SA-2019-2116.nasl

Version: 1.5

Type: local

Published: 11/12/2019

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: p-cpe:/a:huawei:euleros:ctdb, p-cpe:/a:huawei:euleros:ctdb-tests, p-cpe:/a:huawei:euleros:libsmbclient, p-cpe:/a:huawei:euleros:libwbclient, p-cpe:/a:huawei:euleros:python2-samba, p-cpe:/a:huawei:euleros:python2-samba-test, p-cpe:/a:huawei:euleros:python3-samba, p-cpe:/a:huawei:euleros:python3-samba-test, p-cpe:/a:huawei:euleros:samba, p-cpe:/a:huawei:euleros:samba-client, p-cpe:/a:huawei:euleros:samba-client-libs, p-cpe:/a:huawei:euleros:samba-common, p-cpe:/a:huawei:euleros:samba-common-libs, p-cpe:/a:huawei:euleros:samba-common-tools, p-cpe:/a:huawei:euleros:samba-dc-libs, p-cpe:/a:huawei:euleros:samba-krb5-printing, p-cpe:/a:huawei:euleros:samba-libs, p-cpe:/a:huawei:euleros:samba-pidl, p-cpe:/a:huawei:euleros:samba-test, p-cpe:/a:huawei:euleros:samba-test-libs, p-cpe:/a:huawei:euleros:samba-winbind, p-cpe:/a:huawei:euleros:samba-winbind-clients, p-cpe:/a:huawei:euleros:samba-winbind-krb5-locator, p-cpe:/a:huawei:euleros:samba-winbind-modules, cpe:/o:huawei:euleros:2.0

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

Excluded KB Items: Host/EulerOS/uvp_version

Exploit Ease: No known exploits are available

Patch Publication Date: 10/27/2019

Reference Information

CVE: CVE-2018-16852, CVE-2018-16857, CVE-2019-10197