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VID 19024
Severity 40
Port 53
Protocol UDP
Class DNS
Detailed Description ISC BIND (Berkeley Internet Name Daemon) is a server utility that implements the DNS (domain name service) protocol. It is widely used on the Internet.
According to its self-reported version number, the remote installation of BIND is potentially affected by a denial of service vulnerability. If BIND queries a domain with large RRSIG resource record sets it may trigger an assertion failure and cause the name server process to crash due to an off-by-one error in a buffer size check.

* Note: This check solely relied on the banner of the remote DNS server to assess this vulnerability, so this might be a false positive.

* References:
http://ftp.isc.org/isc/bind9/9.4-ESV-R4-P1/RELEASE-NOTES-BIND-9.4-ESV-R4-P1.html
http://ftp.isc.org/isc/bind9/9.6-ESV-R4-P1/RELEASE-NOTES-BIND-9.6-ESV-R4-P1.html
http://ftp.isc.org/isc/bind9/9.7.3-P1/RELEASE-NOTES-BIND-9.7.3-P1.html
http://ftp.isc.org/isc/bind9/9.8.0-P2/RELEASE-NOTES-BIND-9.8.0-P2.html
https://www.isc.org/software/bind/advisories/cve-2011-1910

* Platforms Affected:
Internet Software Consortium, BIND 9.x before 9.7.3-P1, 9.8.x before 9.8.0-P2, 9.4-ESV before 9.4-ESV-R4-P1, and 9.6-ESV before 9.6-ESV-R4-P1
Any operating system Any version
Recommendation Upgrade to the latest version of BIND (9.7.3-P1/9.8.0-P2/9.4-ESV-R4-P1/9.6-ESV-R4-P1 or later), available from the Internet Software Consortium (ISC) Web site at http://www.isc.org/products/BIND/
Related URL CVE-2011-1910 (CVE)
Related URL 48007 (SecurityFocus)
Related URL (ISS)