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certCERTVU:784855
HistorySep 30, 2010 - 12:00 a.m.

Unexpected ACL Behavior in BIND 9.7.2

2010-09-3000:00:00
www.kb.cert.org
13

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.003 Low

EPSS

Percentile

68.1%

Overview

A flaw exists in BIND 9.7.2 through 9.7.2-P1 pertaining to how an ACL is applied.

Description

There is a flaw in BIND 9.7.2 through 9.7.2-P1 where the wrong ACL is applied. This flaw could allow access to a cache via recursion even though the ACL disallowed it. This bug is primarily a risk to operators running both authoritative and recursive DNS on the same BIND server in the same view.


Impact

A loss of confidentiality in cache data exists.


Solution

Upgrade to BIND 9.7.2-P2


Vendor Information

784855

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Internet Systems Consortium Affected

Notified: September 28, 2010 Updated: September 30, 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

This document was written by Jared Allar.

Other Information

CVE IDs: CVE-2010-0218
Severity Metric: 0.01 Date Public:

5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

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

0.003 Low

EPSS

Percentile

68.1%