[ MDVSA-2010:021 ] bind

[dude67]

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Package : bind
Date : January 20, 2010
Affected: 2008.0, 2009.0, 2009.1, 2010.0, Corporate 4.0,
Enterprise Server 5.0
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Problem Description:

Some vulnerabilities were discovered and corrected in bind:

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).

There was an error in the DNSSEC NSEC/NSEC3 validation code that
could cause bogus NXDOMAIN responses (that is, NXDOMAIN responses
for records proven by NSEC or NSEC3 to exist) to be cached as if they
had validated correctly, so that future queries to the resolver would
return the bogus NXDOMAIN with the AD flag set (CVE-2010-0097).

Packages for 2008.0 are provided for Corporate Desktop 2008.0
customers.

Additionally BIND has been upgraded to the latest patch release
version.
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References:

http://cve.mitre.org/cgi-bin/cvename.cg ... -2009-4022
http://cve.mitre.org/cgi-bin/cvename.cg ... -2010-0097
http://cve.mitre.org/cgi-bin/cvename.cg ... -2010-0290
https://www.isc.org/node/504
https://www.isc.org/advisories/CVE-2009-4022v6
https://www.isc.org/advisories/CVE-2010-0097
https://bugzilla.redhat.com/show_bug.cgi?id=557121
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