Executive Summary

Name CVE-2018-5738 First vendor Publication 2019-01-16
Vendor Cve Last vendor Modification 2019-08-30

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact None Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:N/A:N)
Cvss Base Score 5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores


Change #4777 (introduced in October 2017) introduced an unforeseen issue in releases which were issued after that date, affecting which clients are permitted to make recursive queries to a BIND nameserver. The intended (and documented) behavior is that if an operator has not specified a value for the "allow-recursion" setting, it SHOULD default to one of the following: none, if "recursion no;" is set in named.conf; a value inherited from the "allow-query-cache" or "allow-query" settings IF "recursion yes;" (the default for that setting) AND match lists are explicitly set for "allow-query-cache" or "allow-query" (see the BIND9 Administrative Reference Manual section 6.2 for more details); or the intended default of "allow-recursion {localhost; localnets;};" if "recursion yes;" is in effect and no values are explicitly set for "allow-query-cache" or "allow-query". However, because of the regression introduced by change #4777, it is possible when "recursion yes;" is in effect and no match list values are provided for "allow-query-cache" or "allow-query" for the setting of "allow-recursion" to inherit a setting of all hosts from the "allow-query" setting default, improperly permitting recursion to all clients. Affects BIND 9.9.12, 9.10.7, 9.11.3, 9.12.0->9.12.1-P2, the development release 9.13.0, and also releases 9.9.12-S1, 9.10.7-S1, 9.11.3-S1, and 9.11.3-S2 from BIND 9 Supported Preview Edition.

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-5738

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-200 Information Exposure

CPE : Common Platform Enumeration

Application 17
Os 1

Nessus® Vulnerability Scanner

Date Description
2019-01-03 Name : The remote Fedora host is missing a security update.
File : fedora_2018-5417ca3713.nasl - Type : ACT_GATHER_INFO
2019-01-03 Name : The remote Fedora host is missing a security update.
File : fedora_2018-bfec61fb2f.nasl - Type : ACT_GATHER_INFO
2018-08-23 Name : The remote Fedora host is missing a security update.
File : fedora_2018-90f8fbd58e.nasl - Type : ACT_GATHER_INFO
2018-08-02 Name : The remote Fedora host is missing one or more security updates.
File : fedora_2018-c0f12f789e.nasl - Type : ACT_GATHER_INFO
2018-07-12 Name : The remote Slackware host is missing a security update.
File : Slackware_SSA_2018-192-01.nasl - Type : ACT_GATHER_INFO

Sources (Detail)

Source Url
CONFIRM https://kb.isc.org/docs/aa-01616
GENTOO https://security.gentoo.org/glsa/201903-13
SECTRACK http://www.securitytracker.com/id/1041115
UBUNTU https://usn.ubuntu.com/3683-1/

Alert History

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Date Informations
2020-05-23 01:15:12
  • Multiple Updates
2019-08-30 21:19:36
  • Multiple Updates
2019-03-21 00:19:31
  • Multiple Updates
2019-03-14 13:19:44
  • Multiple Updates
2019-02-23 09:19:23
  • Multiple Updates
2019-01-17 17:18:57
  • Multiple Updates
2019-01-17 00:19:24
  • First insertion