National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-5738 Detail

Current Description

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.

Source:  MITRE
View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score: 7.5 HIGH
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Nist CVSS score does not match with CNA score
CNA:  Internet Systems Consortium (ISC)
Base Score: 5.3 MEDIUM
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://www.securitytracker.com/id/1041115 Third Party Advisory VDB Entry
https://kb.isc.org/docs/aa-01616 Mitigation Vendor Advisory
https://security.gentoo.org/glsa/201903-13 Third Party Advisory
https://security.netapp.com/advisory/ntap-20190830-0002/
https://usn.ubuntu.com/3683-1/ Third Party Advisory

Weakness Enumeration

CWE-ID CWE Name Source
CWE-200 Information Exposure NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:isc:bind:9.9.12:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.9.12:s1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.10.7:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.10.7:s1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.11.3:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.11.3:s1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.11.3:s2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.12.0:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.12.0:a1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.12.0:b1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.12.0:b2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.12.0:rc1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.12.0:rc3:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.12.1:*:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.12.1:p1:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.12.1:p2:*:*:*:*:*:*
     Show Matching CPE(s)
 cpe:2.3:a:isc:bind:9.13.0:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
     Show Matching CPE(s)


Change History

6 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-5738
NVD Published Date:
01/16/2019
NVD Last Modified:
08/30/2019