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Fencer Vulns
medium 4.9

CVE-2018-5745 json

An assertion failure can occur if a trust anchor rolls over to an unsupported key algorithm when using managed-keys

published 2019-10-09 7 y ago modified 2026-09-01 2 mo ago also EUVD-2018-17514

cvss
4.9
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
2.3%
EPSS 2.3% chance of exploitation in 30 days, percentile 83%
public exploits
0
none known

Summary

"managed-keys" is a feature which allows a BIND resolver to automatically maintain the keys used by trust anchors which operators configure for use in DNSSEC validation. Due to an error in the managed-keys feature it is possible for a BIND server which uses managed-keys to exit due to an assertion failure if, during key rollover, a trust anchor's keys are replaced with keys which use an unsupported algorithm. Versions affected: BIND 9.9.0 -> 9.10.8-P1, 9.11.0 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.9.3-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected. Versions prior to BIND 9.9.0 have not been evaluated for vulnerability to CVE-2018-5745.

Patch / fix

  • bind9 Debian 14, Debian 13, Debian 12 1:9.11.5.P4+dfsg-1

debian advisories DEBIAN-CVE-2018-5745

  • bind9 Ubuntu 14.04 LTS 1:9.9.5.dfsg-3ubuntu0.19
  • bind9 Ubuntu 16.04 LTS 1:9.10.3.dfsg.P4-8ubuntu1.12
  • bind9 Ubuntu 18.04 LTS 1:9.11.3+dfsg-1ubuntu1.5

ubuntu advisories UBUNTU-CVE-2018-5745

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • bind RHEL 7 32:9.11.4-16.P2.el7
  • bind-sdb RHEL 7 32:9.11.4-16.P2.el7
  • bind-libs RHEL 7 32:9.11.4-16.P2.el7
  • bind-utils RHEL 7 32:9.11.4-16.P2.el7
  • bind-chroot RHEL 7 32:9.11.4-16.P2.el7
  • bind-pkcs11 RHEL 7 32:9.11.4-16.P2.el7
  • bind-license RHEL 7 32:9.11.4-16.P2.el7
  • bind-libs-lite RHEL 7 32:9.11.4-16.P2.el7

red hat advisories RHSA-2020:1061RHSA-2019:3552

  • bind SLES for SAP 12 SP4, SLES 12 SP4, SLED 12 SP4 +1 more 9.11.2-3.10.1
  • bind SLES 11 SP4-LTSS, SLE Point of Sale 11 SP3 9.9.6P1-0.51.15.4
  • bind SLE Module for Server Applications 15 SP1, SLE Module for Server Applications 15, SLE Module for Basesystem 15 SP1 +1 more 9.11.2-12.11.2
  • bind SLES 12-LTSS 9.9.9P1-28.42.1

suse advisories SUSE-SU-2019:2502-1SUSE-SU-2019:1449-1SUSE-SU-2019:14074-1SUSE-SU-2019:1407-1

  • bind openSUSE Tumbleweed 9.16.20-1.4
  • bind openSUSE Leap 15.1, openSUSE Leap 15.0 9.11.2-lp151.11.3.1

opensuse advisories openSUSE-SU-2024:10650-1openSUSE-SU-2019:1533-1

  • bind Alpine 3.24, Alpine 3.23, Alpine 3.22 +14 more 9.12.3_p4-r0
  • bind Alpine 3.7, Alpine 3.6 9.11.5_p4-r0

alpine advisories ALPINE-CVE-2018-5745

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

  • bind Arch Linux 9.13.7-1

arch linux advisories AVG-915

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-2018-5745 updated cvss 4.9

bind: An assertion failure if a trust anchor rolls over to an unsupported key algorithm when using managed-keys

  • 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 AppStream (v. 8) bind 9.11.4-26.P2.el8, bind-sdb 9.11.4-26.P2.el8, bind-libs 9.11.4-26.P2.el8, bind-utils 9.11.4-26.P2.el8, bind-chroot 9.11.4-26.P2.el8, bind-pkcs11 9.11.4-26.P2.el8, +6 more Red Hat Enterprise Linux BaseOS (v. 8) bind 9.11.4-26.P2.el8, bind-export-libs 9.11.4-26.P2.el8
    fixed: vendor fix RHSA-2019:3552
  • Red Hat Enterprise Linux Client (v. 7) bind 9.11.4-16.P2.el7, bind-libs 9.11.4-16.P2.el7, bind-utils 9.11.4-16.P2.el7, bind-license 9.11.4-16.P2.el7, bind-libs-lite 9.11.4-16.P2.el7, bind-export-libs 9.11.4-16.P2.el7 Red Hat Enterprise Linux Client Optional (v. 7) bind 9.11.4-16.P2.el7, bind-sdb 9.11.4-16.P2.el7, bind-chroot 9.11.4-16.P2.el7, bind-pkcs11 9.11.4-16.P2.el7, bind-sdb-chroot 9.11.4-16.P2.el7, bind-pkcs11-libs 9.11.4-16.P2.el7, +1 more Red Hat Enterprise Linux ComputeNode (v. 7) bind 9.11.4-16.P2.el7, bind-libs 9.11.4-16.P2.el7, bind-utils 9.11.4-16.P2.el7, bind-license 9.11.4-16.P2.el7, bind-libs-lite 9.11.4-16.P2.el7, bind-export-libs 9.11.4-16.P2.el7 Red Hat Enterprise Linux ComputeNode Optional (v. 7) bind 9.11.4-16.P2.el7, bind-sdb 9.11.4-16.P2.el7, bind-chroot 9.11.4-16.P2.el7, bind-pkcs11 9.11.4-16.P2.el7, bind-sdb-chroot 9.11.4-16.P2.el7, bind-pkcs11-libs 9.11.4-16.P2.el7, +1 more Red Hat Enterprise Linux Server (v. 7) bind 9.11.4-16.P2.el7, bind-libs 9.11.4-16.P2.el7, bind-utils 9.11.4-16.P2.el7, bind-chroot 9.11.4-16.P2.el7, bind-pkcs11 9.11.4-16.P2.el7, bind-license 9.11.4-16.P2.el7, +4 more Red Hat Enterprise Linux Server Optional (v. 7) bind-sdb 9.11.4-16.P2.el7, bind-sdb-chroot 9.11.4-16.P2.el7
    +2 more products
    Red Hat Enterprise Linux Workstation (v. 7) bind 9.11.4-16.P2.el7, bind-libs 9.11.4-16.P2.el7, bind-utils 9.11.4-16.P2.el7, bind-chroot 9.11.4-16.P2.el7, bind-pkcs11 9.11.4-16.P2.el7, bind-license 9.11.4-16.P2.el7, +4 more Red Hat Enterprise Linux Workstation Optional (v. 7) bind-sdb 9.11.4-16.P2.el7, bind-sdb-chroot 9.11.4-16.P2.el7
    fixed: vendor fix RHSA-2020:1061
  • Red Hat Enterprise Linux 5 bind, bind97
    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

2.29% chance of exploitation in the next 30 days, higher than 83% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.0 4.9 CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD 3.1 4.9 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 3.5 AV:N/AC:M/Au:S/C:N/I:N/A:P

Affected products

  • ISC BIND 9

Classification

Weakness
  • CWE-327 Use of a Broken or Risky Cryptographic Algorithm

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.