ISC BIND 9 libdns Regular Expression Handling DoS

high Nessus Plugin ID 65736

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Synopsis

The remote name server is prone to a denial of service attack.

Description

According to its self-reported version number, the remote installation of BIND can be forced to crash via memory exhaustion caused by specially crafted regular expressions.

Note this vulnerability only affects Unix and Unix-like systems when the application has been compiled to include regular expression support.

Further note that Nessus has only relied on the version itself and has not attempted to determine whether or not the install is actually affected.

Solution

Upgrade to BIND 9.8.4-P2 / 9.8.5b2 / 9.9.2-P2 / 9.9.3b2 or later, or apply the vendor-supplied patch. Alternatively, the application can be recompiled without regular expression support as a workaround.

Plugin Details

Severity: High

ID: 65736

File Name: bind9_992_p2.nasl

Version: 1.8

Type: remote

Family: DNS

Published: 3/29/2013

Updated: 6/27/2018

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Vulnerability Information

CPE: cpe:/a:isc:bind

Required KB Items: bind/version, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 3/26/2013

Vulnerability Publication Date: 3/26/2013

Reference Information

CVE: CVE-2013-2266

BID: 58736

Detections

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