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certCERTVU:837744
HistoryDec 01, 2010 - 12:00 a.m.

ISC BIND named validator vulnerability

2010-12-0100:00:00
www.kb.cert.org
12

6.4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.023 Low

EPSS

Percentile

89.5%

Overview

ISC BIND named contains a vulnerability where under certain situations it could incorrectly mark zone data as insecure.

Description

According to ISC:

named, acting as a DNSSEC validator, was determining if an NS RRset is insecure based on a value that could mean either that the RRset is actually insecure or that there wasn’t a matching key for the RRSIG in the DNSKEY RRset when resuming from validating the DNSKEY RRset.
This can happen when in the middle of a DNSKEY algorithm rollover, when two different algorithms were used to sign a zone but only the new set of keys are in the zone DNSKEY RRset.


Impact

Answers are marked incorrectly as insecure.


Solution

**Apply an update

Users who obtain BIND from a third-party vendor, such as their operating system vendor, should see the vendor information portion of this document for a partial list of affected vendors. **
This vulnerability is addressed in ISC BIND versions 9.4-ESV-R4, 9.6.2-P3 or 9.6-ESV-R3, and 9.7.2-P3. Users of BIND from the original source distribution should upgrade to one of these versions, as appropriate.

See also <https://www.isc.org/software/bind/advisories/cve-2010-3614&gt;


Vendor Information

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Internet Systems Consortium Affected

Updated: December 01, 2010

Status

Affected

Vendor Statement

We have not received a statement from the vendor.

Vendor Information

We are not aware of further vendor information regarding this vulnerability.

Vendor References

CVSS Metrics

Group Score Vector
Base
Temporal
Environmental

References

Acknowledgements

Thanks to Internet Systems Consortium for reporting this vulnerability.

This document was written by Michael Orlando.

Other Information

CVE IDs: CVE-2010-3614
Severity Metric: 7.65 Date Public:

6.4 Medium

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.023 Low

EPSS

Percentile

89.5%