CVE-2018-5733: Integer Overflow or Wraparound

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...

FreeBSD : isc-dhcp -- Multiple vulnerabilities (2040c7f5-1e3a-11e8-8ae9-0050569f0b83)

ISC reports : Failure to properly bounds check a buffer used for processing DHCP options allows a malicious server or an entity masquerading as a server to cause a buffer overflow and resulting crash in dhclient by sending a response containing a specially constructed options section. A malicious...