CVE & CISA-KEV Catalog

CVE-2019-6473

MEDIUM
6.5
CVSS v3
NVD

Description

An invalid hostname option can trigger an assertion failure in the Kea DHCPv4 server process (kea-dhcp4), causing the server process to exit. Versions affected: 1.4.0 to 1.5.0, 1.6.0-beta1, and 1.6.0-beta2.

CWE-617

How to fix

Remediation Available
isc-keaDebian
Fixed in:1.7.5-1CVE-2019-6473
Fixed in:1.7.5-1CVE-2019-6473
Fixed in:1.7.5-1CVE-2019-6473
isc-keaUbuntu
Fixed in:1.0.0-1ubuntu0.1~esm1USN-7759-1
Fixed in:1.1.0-1ubuntu0.1~esm1USN-7759-1
kea-adminUbuntu
Fixed in:1.0.0-1ubuntu0.1~esm1USN-7759-1
Fixed in:1.1.0-1ubuntu0.1~esm1USN-7759-1
kea-commonUbuntu
Fixed in:1.0.0-1ubuntu0.1~esm1USN-7759-1
Fixed in:1.1.0-1ubuntu0.1~esm1USN-7759-1
kea-dhcp-ddns-serverUbuntu
Fixed in:1.0.0-1ubuntu0.1~esm1USN-7759-1
Fixed in:1.1.0-1ubuntu0.1~esm1USN-7759-1
kea-dhcp4-serverUbuntu
Fixed in:1.0.0-1ubuntu0.1~esm1USN-7759-1
Fixed in:1.1.0-1ubuntu0.1~esm1USN-7759-1
kea-dhcp6-serverUbuntu
Fixed in:1.0.0-1ubuntu0.1~esm1USN-7759-1
Fixed in:1.1.0-1ubuntu0.1~esm1USN-7759-1

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 VectorAdjacent
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityNone
IntegrityNone
AvailabilityHigh

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

Exploit Intelligence

0.80%probability of exploitation in 30 days
52ndpercentile

Moderate risk: more likely to be exploited than 52% of all known CVEs.

References

Vendor Advisory1

Related Vulnerabilities

Other CWE-617 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2020-8617High7.593%-Fix
CVE-2020-36222High7.578%-Fix
CVE-2006-5779High7.575%-Fix
CVE-2021-27212High7.564%-Fix
CVE-2018-5740High7.559%-Fix
CVE-2023-28425Medium5.555%-Fix
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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.