Vulnerability in Isc Bind
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 process to exit after failing the assertion test. Affects BIND 9.12.0 and 9.12.1.
EPSS: 0.180 (97.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Isc Bind — versions 9.12.0, 9.12.1
- Netapp Cloud_backup
- Netapp Data_ontap_edge
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security-officer@isc.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
- security-officer@isc.org (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_SECTRACK)
- security-officer@isc.org (x_refsource_CONFIRM, Third Party Advisory)
- security-officer@isc.org (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-5736?
- CVE-2018-5736 is a medium-severity vulnerability in Isc Bind, classified under Reachable Assertion. CVSS score: 5.3/10. Published 2019-01-16.
- How severe is CVE-2018-5736?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2018-5736 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.