CVE & CISA-KEV Catalog

CVE-2018-5745

MEDIUMEPSS 81th pctl
4.9
CVSS v3
NVD

Description

"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.

How to fix

Remediation Available
bind9Debian
Fixed in:1:9.11.5.P4+dfsg-1CVE-2018-5745
Fixed in:1:9.11.5.P4+dfsg-1CVE-2018-5745
Fixed in:1:9.11.5.P4+dfsg-1CVE-2018-5745
Fixed in:1:9.11.5.P4+dfsg-1CVE-2018-5745
bind9Ubuntu
Fixed in:1:9.9.5.dfsg-3ubuntu0.19USN-3893-1
Fixed in:1:9.10.3.dfsg.P4-8ubuntu1.12USN-3893-1
Fixed in:1:9.11.3+dfsg-1ubuntu1.5USN-3893-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredHigh
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

2.26%probability of exploitation in 30 days
81stpercentile

Elevated risk: more likely to be exploited than 81% of all known CVEs.

References

Third-Party Advisory1
Other references1
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.