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A malicious client which is allowed to send very large amounts of traffic (billions of packets) to a DHCP server can eventually overflow a 32-bit reference counter, potentially causing dhcpd to crash. Affects ISC DHCP 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0.
Use CWE-190, Isc vendor hub and Dhcp product page to widen CVE-2018-5733 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2018-5732, CVE-2017-3144 and CVE-2021-25217 for nearby disclosures in the same product family.