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Servers and applications

CVE-2018-5736

An error in zone database reference counting can lead to an assertion failure if a server which is running an affected version of BIND attempts several transfers of a slave zone in quick succession. This defect could be deliberately exercised by an attacker who is permitted to cause a vulnerable server to initiate zone transfers (for example: by sending valid NOTIFY messages), causing the named…

Severity
Medium 5.3
Published
16 Jan 2019
Last changed
17 Jun 2026
Added to UpHeron
1 Nov 2026
Exploit chance
18% in the next 30 daysHigher than 97% of CVEs. EPSS by FIRST, 10 Nov 2026
Weakness
CWE-617
Attack
Over the network · Only under certain conditions · Needs a user account · No user action needed
Attacker can
Take it down
CVSS vector
CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Sources
NVD

Description

An error in zone database reference counting can lead to an assertion failure if a server which is running an affected version of BIND attempts several transfers of a slave zone in quick succession. This defect could be deliberately exercised by an attacker who is permitted to cause a vulnerable server to initiate zone transfers (for example: by sending valid NOTIFY messages), causing the named process to exit after failing the assertion test. Affects BIND 9.12.0 and 9.12.1.

From NVD.

Affected software

SoftwareAffected versions
BIND 9Servers and applications · cpe:a:isc:bind
  • Version 9.12.0
  • Version 9.12.1

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2018-5736
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2018-5736