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CVE-2007-0493: Denial of service via unspecified vectors that cause "dereference a freed fetch context"
Author: Cathy Almond Reference Number: AA-00917 Views: 5720 Created: 2013-05-23 15:27 Last Updated: 2013-05-23 15:27 0 Rating/ Voters

A logic error can cause the named process to exit unintentionally.

CVE: 
CVE-2007-0493  
Posting date: 
30 Jan 2007
Program Impacted: 
BIND
Versions affected:
9.3.0, 9.3.1, 9.3.2, 9.3.3, Alpha and Beta versions of 9.40, Alpha versions of 9.5.0
Severity: 
Low
Exploitable: 
Remotely

Description:

It is possible for the named to dereference (read) a freed fetch context. This can cause named to exit unintentionally.

Workarounds:

Disable or restrict recursion (to limit exposure).

Active exploits:

None known at this time.

Solution:  

Upgrade to BIND 9.2.8, 9.3.4, or 9.4.0, or 9.5.0

Related Documents:

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

If you'd like more information on our Forum or product support please visit www.isc.org/support.

Do you still have questions?  Questions regarding this advisory should go to security-officer@isc.org

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: https://www.isc.org/security-vulnerability-disclosure-policy

This Knowledge Base article https://kb.isc.org/article/AA-00917 is the complete and official security advisory document.

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