CVE-2018-5736

moderate-risk
Published 2019-01-16

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.

Do I need to act?

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42.9% chance of exploitation in next 30 days
EPSS score — higher than 57% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / HIGH complexity

Affected Products (4)

Affected Vendors

Isc Netapp

References (8)

Third Party Advisory http://www.securityfocus.com/bid/104386
Third Party Advisory http://www.securitytracker.com/id/1040941
Vendor Advisory https://kb.isc.org/docs/aa-01602
Third Party Advisory https://security.netapp.com/advisory/ntap-20180926-0004/
Third Party Advisory http://www.securityfocus.com/bid/104386
Third Party Advisory http://www.securitytracker.com/id/1040941
Vendor Advisory https://kb.isc.org/docs/aa-01602
Third Party Advisory https://security.netapp.com/advisory/ntap-20180926-0004/
44
/ 100
moderate-risk
Severity 17/34 · Moderate
Exploitability 17/34 · Moderate
Exposure 10/34 · Low