CVE-2010-3762: failure to handle bad signatures if multiple trust anchors configured


This notification is not an actual Security Vulnerability, but is included here due to user concerns. ISC's evaluation of this issue according to the CVSS rating system did not determine this issue to need a security release.

Document Version:          
Posting date: 
18 Oct 2010
Program Impacted: 
Versions affected: 
9.7 - 9.7.2-P2


Please see this blog posting for information on ISC standardizing of security issue evaluation and why this bug didn't merit a Security Advisory.

This is what was put in the release notes:

If BIND, acting as a DNSSEC validating server, has two or more trust anchors configured in named.conf for the same zone (such as and the response for a record in that zone from the authoritative server includes a bad signature, the validating server will crash while trying to validate that query.


Upgrade to 9.7.2-P3 or later. 

Active exploits:

None known at this time.

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.

ISC Security Vulnerability Disclosure Policy:  Details of our current security advisory policy and practice can be found here:

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

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