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CVE-2010-0218: Unexpected ACL Behavior in BIND 9.7.2
Author: Cathy Almond Reference Number: AA-00934 Views: 11607 Created: 2013-05-23 22:40 Last Updated: 2013-05-23 22:40 0 Rating/ Voters

Wrong ACL applied.

Posting date: 
28 Sep 2010
Program Impacted: 
Versions affected: 
9.7.2 through 9.7.2-P1


There was a flaw where the wrong ACL was applied. This flaw could allow access to a cache via recursion even though the ACL disallowed it.

Risk Assessment:

This bug is primarily a risk to operators running both authoritative and recursive DNS on the same BIND server in the same view.


Upgrade to BIND 9.7.2-P2. No other workaround is currently known.

Active exploits:

None known at this time.


Upgrade to BIND 9.7.2-P2. No other workaround is currently known.

Acknowledgements: Thank you to Alexandre Simon for finding and testing this issue.

Related Documents:

See our BIND Security Matrix for a complete listing of Security Vulnerabilities and versions affected.

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Do you still have questions?  Questions regarding this advisory should go to

Note: ISC patches only currently supported versions. When possible we indicate EOL versions affected. 

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This Knowledge Base article is the complete and official security advisory document.

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