Detections
Analytics
MiracleLinux 7 : unbound-1.4.20-26.el7 (AXSA:2015-838:01)
high Nessus Plugin ID 289261
Synopsis
The remote MiracleLinux host is missing a security update.Description
The remote MiracleLinux 7 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2015-838:01 advisory.Unbound is a validating, recursive, and caching DNS(SEC) resolver.
The C implementation of Unbound is developed and maintained by NLnet Labs. It is based on ideas and algorithms taken from a java prototype developed by Verisign labs, Nominet, Kirei and ep.net.
Unbound is designed as a set of modular components, so that also DNSSEC (secure DNS) validation and stub-resolvers (that do not run as a server, but are linked into an application) are easily possible.
Security issues fixed with this release:
CVE-2014-8602 iterator.c in NLnet Labs Unbound before 1.5.1 does not limit delegation chaining, which allows remote attackers to cause a denial of service (memory and CPU consumption) via a large or infinite number of referrals.
Fixed bugs:
* Prior to this update, there was a mistake in the time configuration in the cron job invoking unbound- anchor to update the root zone key. Consequently, unbound-anchor was invoked once a month instead of every day, thus not complying with RFC 5011. The cron job has been replaced with a systemd timer unit that is invoked on a daily basis. Now, the root zone key validity is checked daily at a random time within a 24-hour window, and compliance with RFC 5011 is ensured.
* Previously, the unbound packages were installing their configuration file for the systemd-tmpfiles utility into the /etc/tmpfiles.d/ directory. As a consequence, changes to unbound made by the administrator in /etc/tmpfiles.d/ could be overwritten on package reinstallation or update. To fix this bug, unbound has been amended to install the configuration file into the /usr/lib/tmpfiles.d/ directory.
As a result, the system administrator's configuration in /etc/tmpfiles.d/ is preserved, including any changes, on package reinstallation or update.
* The unbound server default configuration included validation of DNS records using the DNSSEC Look-aside Validation (DLV) registry. The Internet Systems Consortium (ISC) plans to deprecate the DLV registry service as no longer needed, and unbound could execute unnecessary steps. Therefore, the use of the DLV registry has been removed from the unbound server default configuration. Now, unbound does not try to perform DNS records validation using the DLV registry.
Tenable has extracted the preceding description block directly from the MiracleLinux 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 affected unbound and / or unbound-libs packages.See Also
Plugin Details
Severity: High
ID: 289261
File Name: miracle_linux_AXSA-2015-838.nasl
Version: 1.1
Type: local
Published: 1/16/2026
Updated: 1/16/2026
Supported Sensors: Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
Vendor
Vendor Severity: Low
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.2
Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2014-8602
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
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:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:miracle:linux:7, p-cpe:/a:miracle:linux:unbound-libs, p-cpe:/a:miracle:linux:unbound
Required KB Items: Host/local_checks_enabled, Host/MiracleLinux/release, Host/MiracleLinux/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 11/30/2015
Vulnerability Publication Date: 12/8/2014
Reference Information
CVE: CVE-2014-8602