CVE-2018-5736

Severity: medium (CVSS 5.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 18.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-01-16 · updated 2026-06-17
Weakness: CWE-617

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.

Affected products

ISC BIND: 9.12.0, 9.12.1
NetApp Cloud Backup: all versions
NetApp Data Ontap Edge: all versions

References

http://www.securityfocus.com/bid/104386
http://www.securitytracker.com/id/1040941
https://kb.isc.org/docs/aa-01602
https://security.netapp.com/advisory/ntap-20180926-0004/
http://www.securityfocus.com/bid/104386
http://www.securitytracker.com/id/1040941
https://kb.isc.org/docs/aa-01602
https://security.netapp.com/advisory/ntap-20180926-0004/

Get alerted when CVE-2018-5736 or the next vulnerability affects your stack