Today BIND9 recevied an update fixing a "recursive resolver with a RUNTIME_CHECK error in resolver.c" [1] Affected versions are BIND 9.6-ESV-R9, 9.8.5, and 9.9.3. The rated CVSS on this one is 7.8 [1,2]

 

To quote isc.org:

 

"At the time of this advisory no intentional exploitation of this bug has been observed in the wild. However, the existence of the issue has been disclosed on an open mailing list with enough accompanying detail to reverse engineer an attack and ISC is therefore treating this as a Type II (publicly disclosed) vulnerability, in accordance with our Phased Disclosure Process."

 

It it is time to review those BIND9 servers and start the process of patching.

 

[1] https://kb.isc.org/article/AA-00967

[2] http://nvd.nist.gov/cvss.cfm?calculator&adv&version=2&vector=(AV:N/AC:L/Au:N/C:N/I:N/A:C)