ISC BIND DNS Resource Records Handling Vulnerability

SA49338

CVE-2012-1667

04 Jun 2012

05 Jun 2012

Moderately Critical

Vendor Patch

ISC BIND 9.2.x
ISC BIND 9.3.x
ISC BIND 9.4.x
ISC BIND 9.5.x
ISC BIND 9.6.x
ISC BIND 9.7.x
ISC BIND 9.8.x
ISC BIND 9.9.x

From remote

DoS (Denial of Service)

This includes vulnerabilities ranging from excessive resource consumption (e.g. causing a system to use a lot of memory) to crashing an application or an entire system.

Exposure of sensitive information

Vulnerabilities where documents or credentials are leaked or can be revealed either locally or from remote.

A vulnerability has been reported in ISC BIND, which can be exploited by malicious people to disclose potentially sensitive information or cause a DoS (Denial of Service).

The vulnerability is caused due to an error when handling DNS resource records and can be exploited to e.g. cause recursive servers to crash or disclose certain memory to clients via records containing zero length rdata.

Please see the vendor's advisory for a list of affected versions.

Update to version 9.6-ESV-R7-P1, 9.7.6-P1, 9.8.3-P1, or 9.9.1-P1.

The vendor credits Dan Luther, Level3 Communications.

http://www.isc.org/software/bind/advisories/cve-2012-1667