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TI-2018-04145 Aliases CVE-2018-5738GHSA-cg2m-4gq8-j388

Some versions of BIND can improperly permit recursive query service to unauthorized clients

Priority MEDIUM 46CWE-200Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
No fix listed

Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-200.

Summary

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.

Why it matters now

EPSS 0.1137 96th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
ISCBIND 99.9.12, 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.—No fix listedCNA
  • BIND 9 VendorISC Affected 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. Fixed in — No fix listed CNA

CPE configurations NVD · 18

CPEVersionsRoleVendor
cpe:2.3:a:isc:bind:9.9.12:*:*:*:*:*:*:*9.9.12VulnerableISC
cpe:2.3:a:isc:bind:9.9.12:s1:*:*:*:*:*:*9.9.12 s1VulnerableISC
cpe:2.3:a:isc:bind:9.10.7:*:*:*:*:*:*:*9.10.7VulnerableISC
cpe:2.3:a:isc:bind:9.10.7:s1:*:*:*:*:*:*9.10.7 s1VulnerableISC
cpe:2.3:a:isc:bind:9.11.3:*:*:*:*:*:*:*9.11.3VulnerableISC
cpe:2.3:a:isc:bind:9.11.3:s1:*:*:*:*:*:*9.11.3 s1VulnerableISC
cpe:2.3:a:isc:bind:9.11.3:s2:*:*:*:*:*:*9.11.3 s2VulnerableISC
cpe:2.3:a:isc:bind:9.12.0:*:*:*:*:*:*:*9.12.0VulnerableISC
cpe:2.3:a:isc:bind:9.12.0:a1:*:*:*:*:*:*9.12.0 a1VulnerableISC
cpe:2.3:a:isc:bind:9.12.0:b1:*:*:*:*:*:*9.12.0 b1VulnerableISC
  • cpe:2.3:a:isc:bind:9.9.12:*:*:*:*:*:*:* Versions 9.9.12 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.9.12:s1:*:*:*:*:*:* Versions 9.9.12 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.10.7:*:*:*:*:*:*:* Versions 9.10.7 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.10.7:s1:*:*:*:*:*:* Versions 9.10.7 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.11.3:*:*:*:*:*:*:* Versions 9.11.3 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.11.3:s1:*:*:*:*:*:* Versions 9.11.3 s1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.11.3:s2:*:*:*:*:*:* Versions 9.11.3 s2 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.12.0:*:*:*:*:*:*:* Versions 9.12.0 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.12.0:a1:*:*:*:*:*:* Versions 9.12.0 a1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.12.0:b1:*:*:*:*:*:* Versions 9.12.0 b1 Vulnerable ·ISC
Show 8 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:isc:bind:9.12.0:b2:*:*:*:*:*:*9.12.0 b2VulnerableISC
cpe:2.3:a:isc:bind:9.12.0:rc1:*:*:*:*:*:*9.12.0 rc1VulnerableISC
cpe:2.3:a:isc:bind:9.12.0:rc3:*:*:*:*:*:*9.12.0 rc3VulnerableISC
cpe:2.3:a:isc:bind:9.12.1:*:*:*:*:*:*:*9.12.1VulnerableISC
cpe:2.3:a:isc:bind:9.12.1:p1:*:*:*:*:*:*9.12.1 p1VulnerableISC
cpe:2.3:a:isc:bind:9.12.1:p2:*:*:*:*:*:*9.12.1 p2VulnerableISC
cpe:2.3:a:isc:bind:9.13.0:*:*:*:*:*:*:*9.13.0VulnerableISC
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
  • cpe:2.3:a:isc:bind:9.12.0:b2:*:*:*:*:*:* Versions 9.12.0 b2 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.12.0:rc1:*:*:*:*:*:* Versions 9.12.0 rc1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.12.0:rc3:*:*:*:*:*:* Versions 9.12.0 rc3 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.12.1:*:*:*:*:*:*:* Versions 9.12.1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.12.1:p1:*:*:*:*:*:* Versions 9.12.1 p1 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.12.1:p2:*:*:*:*:*:* Versions 9.12.1 p2 Vulnerable ·ISC
  • cpe:2.3:a:isc:bind:9.13.0:*:*:*:*:*:*:* Versions 9.13.0 Vulnerable ·ISC
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    ISC BIND 9 — GLSA-201903-13

    3 records Highest priority Priority HIGH 1 HIGH, 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2018-04147 A flaw in the "deny-answer-aliases" feature can cause an assertion failure in namedPriority HIGH 67
    • TI-2018-04148 Update policies krb5-subdomain and ms-subdomain do not enforce controls promised in their documentationPriority LOW 35
    Show all 3 records → Advisory →

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

Not affected: 4 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-5738
  2. 2026-10-03 Alias added: GHSA-cg2m-4gq8-j388

References

Advisory 3

Other 1

  • TI-2015-04610 Assertion failure in ISC BIND named via TKEY queries KEVCVSS 3.1HIGH 7.5
  • TI-2023-27571 Certain DNSSEC aspects of the DNS protocol (in RFC 4033, 4034, 4035, 6840, and related… CVSS 3.1HIGH 7.5
  • TI-2021-07476 A second vulnerability in BIND's GSSAPI security policy negotiation can be targeted by a buffer overflow attack CVSS 3.1CRITICAL 9.8
  • TI-2023-27773 The Closest Encloser Proof aspect of the DNS protocol (in RFC 5155 when RFC 9276 guidance… CVSS 3.1HIGH 7.5
  • TI-2020-06910 A logic error in code which checks TSIG validity can be used to trigger an assertion failure in tsig.c CVSS 3.1HIGH 7.5
  • TI-2016-02320 buffer.c in named in ISC BIND 9 before 9.9.9-P3, 9.10.x before 9.10.4-P3, and 9.11.x… CVSS 3.0HIGH 7.5
See all 192 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences