RHEL 7 : 389-ds-base (RHSA-2018:2757)

high Nessus Plugin ID 117774

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Synopsis

The remote Red Hat host is missing one or more security updates for 389-ds-base.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2018:2757 advisory.

389 Directory Server is an LDAP version 3 (LDAPv3) compliant server. The base packages include the Lightweight Directory Access Protocol (LDAP) server and command-line utilities for server administration.

Security Fix(es):

* 389-ds-base: race condition on reference counter leads to DoS using persistent search (CVE-2018-10850)

* 389-ds-base: ldapsearch with server side sort allows users to cause a crash (CVE-2018-10935)

* 389-ds-base: Server crash through modify command with large DN (CVE-2018-14624)

* 389-ds-base: Crash in delete_passwdPolicy when persistent search connections are terminated unexpectedly (CVE-2018-14638)

For more details about the security issue(s), including the impact, a CVSS score, and other related information, refer to the CVE page(s) listed in the References section.

The CVE-2018-10850 issue was discovered by Thierry Bordaz (Red Hat) and the CVE-2018-14638 issue was discovered by Viktor Ashirov (Red Hat).

Bug Fix(es):

* Previously, the nucn-stans framework was enabled by default in Directory Server, but the framework is not stable. As a consequence, deadlocks and file descriptor leaks could occur. This update changes the default value of the nsslapd-enable-nunc-stans parameter to off. As a result, Directory Server is now stable. (BZ#1614836)

* When a search evaluates the shadowAccount entry, Directory Server adds the shadow attributes to the entry. If the fine-grained password policy is enabled, the shadowAccount entry can contain its own pwdpolicysubentry policy attribute. Previously, to retrieve this attribute, the server started an internal search for each shadowAccount entry, which was unnecessary because the entry was already known to the server. With this update, Directory Server only starts internal searches if the entry is not known.
As a result, the performance of searches, such as response time and throughput, is improved. (BZ#1615924)

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

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

Solution

Update the RHEL 389-ds-base package based on the guidance in RHSA-2018:2757.

Plugin Details

Severity: High

ID: 117774

File Name: redhat-RHSA-2018-2757.nasl

Version: 1.13

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 9/27/2018

Updated: 11/5/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: High

Base Score: 7.1

Temporal Score: 5.6

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

CVSS Score Source: CVE-2018-10850

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

CVSS Score Source: CVE-2018-14638

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:389-ds-base, p-cpe:/a:redhat:enterprise_linux:389-ds-base-snmp, p-cpe:/a:redhat:enterprise_linux:389-ds-base-devel, p-cpe:/a:redhat:enterprise_linux:389-ds-base-libs

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: 9/25/2018

Vulnerability Publication Date: 6/13/2018

Reference Information

CVE: CVE-2018-10850, CVE-2018-10935, CVE-2018-14624, CVE-2018-14638

CWE: 20, 362, 400

RHSA: 2018:2757

Detections

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