Scientific Linux Security Update : bind on SL5.x i386/x86_64

This script is Copyright (C) 2012 Tenable Network Security, Inc.


Synopsis :

The remote Scientific Linux host is missing one or more security
updates.

Description :

CVE-2010-0097 BIND DNSSEC NSEC/NSEC3 validation code could cause bogus
NXDOMAIN responses

CVE-2010-0290 BIND upstream fix for CVE-2009-4022 is incomplete

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)

After installing the update, the BIND daemon (named) will be restarted
automatically.

See also :

http://www.nessus.org/u?1630227d

Solution :

Update the affected packages.

Risk factor :

Medium / CVSS Base Score : 4.3
(CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N)

Family: Scientific Linux Local Security Checks

Nessus Plugin ID: 60726 ()

Bugtraq ID:

CVE ID: CVE-2009-4022
CVE-2010-0097
CVE-2010-0290