VULNERABILITY INTELLIGENCE
CVE-2018-5733
CVSS score7.5 HIGH
EPSS probability20.24%
CISA KEVNot currently listed
Published2019-01-16
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
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.
Weakness classification
- CWE-190: Integer Overflow or Wraparound
Primary references
- security-officer@isc.org — Third Party Advisory, VDB Entry
- security-officer@isc.org — Third Party Advisory, VDB Entry
- security-officer@isc.org — Third Party Advisory
- security-officer@isc.org — Third Party Advisory
- security-officer@isc.org — Vendor Advisory
- security-officer@isc.org — Third Party Advisory
- security-officer@isc.org — Third Party Advisory
- security-officer@isc.org — Third Party Advisory
- security-officer@isc.org — Third Party Advisory
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
- af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory