CentOS 5 : bind (CESA-2010:0062)

high Nessus Plugin ID 44099

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Synopsis

The remote CentOS host is missing one or more security updates.

Description

Updated bind packages that fix two security issues are now available for Red Hat Enterprise Linux 5.

This update has been rated as having moderate security impact by the Red Hat Security Response Team.

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.

A flaw was found in the BIND DNSSEC NSEC/NSEC3 validation code. If BIND was running as a DNSSEC-validating resolver, it could incorrectly cache NXDOMAIN responses, as if they were valid, for records proven by NSEC or NSEC3 to exist. A remote attacker could use this flaw to cause a BIND server to return the bogus, cached NXDOMAIN responses for valid records and prevent users from retrieving those records (denial of service). (CVE-2010-0097)

The original fix for CVE-2009-4022 was found to be incomplete. BIND was incorrectly caching certain responses without performing proper DNSSEC validation. CNAME and DNAME records could be cached, without proper DNSSEC validation, when received from processing recursive client queries that requested DNSSEC records but indicated that checking should be disabled. A remote attacker could use this flaw to bypass the DNSSEC validation check and perform a cache poisoning attack if the target BIND server was receiving such client queries.
(CVE-2010-0290)

All BIND users are advised to upgrade to these updated packages, which contain a backported patch to resolve these issues. After installing the update, the BIND daemon (named) will be restarted automatically.

Solution

Update the affected bind packages.

See Also

http://www.nessus.org/u?3a4e3ef7

http://www.nessus.org/u?b608743b

Plugin Details

Severity: High

ID: 44099

File Name: centos_RHSA-2010-0062.nasl

Version: 1.16

Type: local

Agent: unix

Published: 1/21/2010

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.6

Temporal Score: 5.6

Vector: AV:N/AC:H/Au:N/C:C/I:C/A:C

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:centos:centos:bind, p-cpe:/a:centos:centos:bind-chroot, p-cpe:/a:centos:centos:bind-devel, p-cpe:/a:centos:centos:bind-libbind-devel, p-cpe:/a:centos:centos:bind-libs, p-cpe:/a:centos:centos:bind-sdb, p-cpe:/a:centos:centos:bind-utils, p-cpe:/a:centos:centos:caching-nameserver, cpe:/o:centos:centos:5

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

Exploit Ease: No known exploits are available

Patch Publication Date: 1/20/2010

Vulnerability Publication Date: 1/22/2010

Reference Information

CVE: CVE-2010-0097, CVE-2010-0290, CVE-2010-0382

BID: 37118, 37865

RHSA: 2010:0062