4.9Medium

Isc Bind

CVE-2018-5745

"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.

What this means for your business

  • It affects Isc Bind. It matters if your company, or a supplier that handles your data, runs it.
  • An attacker can use it remotely, over a network, with an administrator login, and without anyone at your company clicking anything.

What to do

  1. 1Check whether your company or your suppliers run Isc Bind, and which version. The affected versions are listed further down this page.
  2. 2If you do, follow the vendor's guidance. No patch reference has been published yet.

Not sure if your company is exposed?

Fastnexa’s certified penetration testers can check whether attackers could use this flaw, or others like it, against your websites, apps and network. The full test is free for our first 10 founding clients until 31 December 2026.

Scoring

CVSS
4.9 (v3.1)
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
Weakness
CWE-327
Assigned by
security-officer@isc.org

Dates

Published
2019-10-09
Last modified
2026-09-01
Sources
NVD

Affected products

  • Isc Bind9.9.0 - 9.10.7, 9.11.0 - 9.11.4, 9.12.0 - 9.12.2, 9.13.0 - 9.13.6, 9.9.3, 9.10.7, 9.10.8, 9.11.5, 9.12.3

As listed in the NVD configuration data. Not a statement about your estate.

References