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Fencer Vulns
medium 6.5

CVE-2018-5741 json

Update policies krb5-subdomain and ms-subdomain do not enforce controls promised in their documentation

published 2019-01-16 7 y ago modified 2026-06-17 4 mo ago also EUVD-2018-17510

cvss
6.5
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
3.5%
EPSS 3.5% chance of exploitation in 30 days, percentile 89%
public exploits
0
none known

Summary

To provide fine-grained controls over the ability to use Dynamic DNS (DDNS) to update records in a zone, BIND 9 provides a feature called update-policy. Various rules can be configured to limit the types of updates that can be performed by a client, depending on the key used when sending the update request. Unfortunately, some rule types were not initially documented, and when documentation for them was added to the Administrator Reference Manual (ARM) in change #3112, the language that was added to the ARM at that time incorrectly described the behavior of two rule types, krb5-subdomain and ms-subdomain. This incorrect documentation could mislead operators into believing that policies they had configured were more restrictive than they actually were. This affects BIND versions prior to BIND 9.11.5 and BIND 9.12.3.

Patch / fix

  • isc bind 9.11.5, 9.12.3
  • bind9 Debian 14, Debian 13, Debian 12 1:9.11.5+dfsg-1

debian advisories DEBIAN-CVE-2018-5741

  • bind RHEL 7 32:9.11.4-9.P2.el7
  • bind-sdb RHEL 7 32:9.11.4-9.P2.el7
  • bind-libs RHEL 7 32:9.11.4-9.P2.el7
  • bind-utils RHEL 7 32:9.11.4-9.P2.el7
  • bind-chroot RHEL 7 32:9.11.4-9.P2.el7
  • bind-pkcs11 RHEL 7 32:9.11.4-9.P2.el7
  • bind-license RHEL 7 32:9.11.4-9.P2.el7
  • bind-libs-lite RHEL 7 32:9.11.4-9.P2.el7

red hat advisories RHSA-2019:2057

  • bind SLES for SAP 15, SLES 15-LTSS, SLE Module for Server Applications 15 SP2 +5 more 9.16.6-12.32.1
  • sysuser-tools SLES for SAP 15, SLES 15-LTSS, SLE Module for Development Tools 15 SP2 +4 more 2.0-4.2.8
  • bind SLES for SAP 12 SP3, SLES for SAP 12 SP2, SLES 12 SP3-LTSS +8 more 9.9.9P1-63.17.1
  • bind SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 9.9.6P1-0.51.20.1

suse advisories SUSE-SU-2020:2914-1SUSE-SU-2020:1914-1SUSE-SU-2020:14400-1

  • bind openSUSE Leap 15.1 9.16.6-lp151.11.9.1
  • libuv openSUSE Leap 15.1 1.18.0-lp151.3.3.1
  • sysuser-tools openSUSE Leap 15.1 2.0-lp151.4.3.1
  • bind openSUSE Leap 15.2 9.16.6-lp152.14.3.1
  • libuv openSUSE Leap 15.2 1.18.0-lp152.4.3.1
  • sysuser-tools openSUSE Leap 15.2 2.0-lp152.5.3.1

opensuse advisories openSUSE-SU-2020:1701-1openSUSE-SU-2020:1699-1

  • bind Alpine 3.7, Alpine 3.6 9.11.5-r0
  • bind Alpine 3.9, Alpine 3.8 9.12.3-r0

alpine advisories ALPINE-CVE-2018-5741

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2018-5741 updated cvss 6.5

bind: Incorrect documentation of krb5-subdomain and ms-subdomain update policies

  • Red Hat Enterprise Linux 6 bind, bind-sdb, bind-libs, bind-utils, bind-chroot
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux Client (v. 7) bind 9.11.4-9.P2.el7, bind-libs 9.11.4-9.P2.el7, bind-utils 9.11.4-9.P2.el7, bind-license 9.11.4-9.P2.el7, bind-libs-lite 9.11.4-9.P2.el7, bind-export-libs 9.11.4-9.P2.el7 Red Hat Enterprise Linux Client Optional (v. 7) bind 9.11.4-9.P2.el7, bind-sdb 9.11.4-9.P2.el7, bind-chroot 9.11.4-9.P2.el7, bind-pkcs11 9.11.4-9.P2.el7, bind-sdb-chroot 9.11.4-9.P2.el7, bind-pkcs11-libs 9.11.4-9.P2.el7, +1 more Red Hat Enterprise Linux ComputeNode (v. 7) bind 9.11.4-9.P2.el7, bind-libs 9.11.4-9.P2.el7, bind-utils 9.11.4-9.P2.el7, bind-license 9.11.4-9.P2.el7, bind-libs-lite 9.11.4-9.P2.el7, bind-export-libs 9.11.4-9.P2.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) bind 9.11.4-9.P2.el7, bind-sdb 9.11.4-9.P2.el7, bind-chroot 9.11.4-9.P2.el7, bind-pkcs11 9.11.4-9.P2.el7, bind-sdb-chroot 9.11.4-9.P2.el7, bind-pkcs11-libs 9.11.4-9.P2.el7, +1 more Red Hat Enterprise Linux Server (v. 7) bind 9.11.4-9.P2.el7, bind-libs 9.11.4-9.P2.el7, bind-utils 9.11.4-9.P2.el7, bind-chroot 9.11.4-9.P2.el7, bind-pkcs11 9.11.4-9.P2.el7, bind-license 9.11.4-9.P2.el7, +4 more Red Hat Enterprise Linux Server Optional (v. 7) bind-sdb 9.11.4-9.P2.el7, bind-sdb-chroot 9.11.4-9.P2.el7
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) bind 9.11.4-9.P2.el7, bind-libs 9.11.4-9.P2.el7, bind-utils 9.11.4-9.P2.el7, bind-chroot 9.11.4-9.P2.el7, bind-pkcs11 9.11.4-9.P2.el7, bind-license 9.11.4-9.P2.el7, +4 more Red Hat Enterprise Linux Workstation Optional (v. 7) bind-sdb 9.11.4-9.P2.el7, bind-sdb-chroot 9.11.4-9.P2.el7
    fixed: vendor fix RHSA-2019:2057
  • Red Hat Enterprise Linux 5 bind, bind97 Red Hat Enterprise Linux 8 bind, bind-sdb, bind-libs, bind-utils, bind-chroot, bind-pkcs11, +7 more Red Hat Virtualization 4 bind
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

3.45% chance of exploitation in the next 30 days, higher than 89% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
NVD 2.0 4.0 AV:N/AC:L/Au:S/C:N/I:P/A:N

Affected products

  • ISC BIND 9

Classification

Weakness

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.