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centosCentOS ProjectCESA-2009:1620
HistoryDec 17, 2009 - 12:39 p.m.

bind, caching security update

2009-12-1712:39:21
CentOS Project
lists.centos.org
45

2.6 Low

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.013 Low

EPSS

Percentile

85.5%

CentOS Errata and Security Advisory CESA-2009:1620

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.

Michael Sinatra discovered that BIND was incorrectly caching responses
without performing proper DNSSEC validation, when those responses were
received during the resolution of a recursive client query 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-2009-4022)

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

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-announce/2009-December/078526.html
https://lists.centos.org/pipermail/centos-announce/2009-December/078527.html

Affected packages:
bind
bind-chroot
bind-devel
bind-libbind-devel
bind-libs
bind-sdb
bind-utils
caching-nameserver

Upstream details at:
https://access.redhat.com/errata/RHSA-2009:1620

2.6 Low

CVSS2

Access Vector

NETWORK

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

0.013 Low

EPSS

Percentile

85.5%