ISC BIND 9.x < 9.9.8-P3 / 9.9.8-S4 / 9.9.9-S3 / 9.10.3-P3 DoS

medium Nessus Network Monitor Plugin ID 9869


The remote DNS server may be affected by a Denial of Service (DoS) attack vector.


Versions of ISC BIND 9.x prior to 9.9.8-P3, 9.9.8-S4, 9.9.9-S3 and 9.10.3-P3 are unpatched for a flaw in the 'totext_in_apl()' function in 'lib/dns/rdata/in_1/apl_42.c' that is triggered when handling certain string formatting operations. This may allow an authenticated, remote attacker to cause the named service to terminate.


Upgrade ISC BIND to version 9.10.3-P3 or later. If version 9.10.x cannot be obtained, versions 9.9.9-S3, 9.9.8-S4 and 9.9.8-P3 are also patched for this vulnerability.

See Also

Plugin Details

Severity: Medium

ID: 9869

Family: DNS Servers

Published: 1/19/2017

Updated: 3/6/2019

Nessus ID: 88385

Risk Information


Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C

Temporal Vector: E:ND/RL:OF/RC:C


Risk Factor: Medium

Base Score: 6.5

Temporal Score: 6.2

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: E:X/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:isc:bind

Patch Publication Date: 1/19/2016

Vulnerability Publication Date: 12/31/2015

Reference Information

CVE: CVE-2015-8704

BID: 81329