CVE-2007-2241: Sequence of queries can cause a recursive nameserver to exit


Posting date: 
30 April 2007
Program Impacted: 
Versions affected: 
9.4.0 and Alpha releases of 9.5.0


A sequence of queries can cause a recursive nameserver to exit. While it is unlikely these will occur in normal operation, an attack can use them to cause the affected versions to exit. This attack is a denial of service, and does not allow an attacker to gain control of affected systems.


Disable recursion ('recursion no;' set in named.conf) if it is not required by your configuration.

Active exploits:

None known at this time.


Upgrade to BIND 9.4.1 or BIND 9.5.0.

Related Documents:

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

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