GLSA-200908-02 : BIND: Denial of Service

medium Nessus Plugin ID 40463

Synopsis

The remote Gentoo host is missing one or more security-related patches.

Description

The remote host is affected by the vulnerability described in GLSA-200908-02 (BIND: Denial of Service)

Matthias Urlichs reported that the dns_db_findrdataset() function fails when the prerequisite section of the dynamic update message contains a record of type 'ANY' and where at least one RRset for this FQDN exists on the server.
Impact :

A remote unauthenticated attacker could send a specially crafted dynamic update message to the BIND daemon (named), leading to a Denial of Service (daemon crash). This vulnerability affects all primary (master) servers -- it is not limited to those that are configured to allow dynamic updates.
Workaround :

Configure a firewall that performs Deep Packet Inspection to prevent nsupdate messages from reaching named. Alternatively, expose only secondary (slave) servers to untrusted networks.

Solution

All BIND users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-dns/bind-9.4.3_p3'

Plugin Details

Severity: Medium

ID: 40463

File Name: gentoo_GLSA-200908-02.nasl

Version: 1.17

Type: local

Family: Gentoo Local Security Checks

Published: 8/3/2009

Updated: 1/6/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.6

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

Vulnerability Information

CPE: p-cpe:/a:gentoo:linux:bind, cpe:/o:gentoo:linux

Required KB Items: Host/local_checks_enabled, Host/Gentoo/release, Host/Gentoo/qpkg-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/1/2009

Exploitable With

Core Impact

Reference Information

CVE: CVE-2009-0696

BID: 35848

CWE: 16

GLSA: 200908-02

Detections

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