ISC BIND 9 Denial of Service Vulnerability (CVE-2018-5743)
high Nessus Plugin ID 124652
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Synopsis
The remote name server is affected by a denial of service vulnerability.Description
ISC BIND versions 9.9.x prior or equal to 9.10.8-P1, 9.11.x prior to 9.11.6-P1, 9.12.x prior to 9.12.4-P1, 9.13.0 prior or equal to 9.13.7, 9.14.0, and BIND 9 Supported Preview Edition versions 9.9.3-S1 prior or equal to to 9.11.5-S3, and 9.11.5-S5 are affected by a DoS vulnerability due to a flaw in the feature to limit the number of simultaneous TCP connections. An unauthenticated, remote attacker can exploit this issue, to cause the application to stop responding.Solution
Upgrade to ISC BIND version 9.11.6-P1, 9.12.4-P1, 9.14.1, 9.11.5-S6, 9.11.6-S1 or later.See Also
https://kb.isc.org/docs/aa-00861
Plugin Details
Severity: High
ID: 124652
File Name: bind9_CVE-2018-5743.nasl
Version: 1.4
Type: remote
Family: DNS
Published: 5/7/2019
Updated: 5/22/2020
Dependencies: bind_version.nasl
Configuration: Enable paranoid mode
Risk Information
CVSS Score Source: CVE-2018-5743
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 4.3
Temporal Score: 3.2
Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P
Temporal Vector: E:U/RL:OF/RC:C
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: E:U/RL:O/RC: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: 4/24/2019
Vulnerability Publication Date: 4/24/2019
Reference Information
CVE: CVE-2018-5743
BID: 108077
IAVA: 2019-A-0139-S