CVEvulnerability

CVE-2018-5733

7.5 HIGH Published 2019-01-16 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2019-01-16
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 3.0 ([email protected])
5.9 MEDIUM — CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0 ([email protected])
5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
CWE-190

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.

Affected configurations

• isc dhcp (>= 4.2.0 <= 4.2.8) • isc dhcp (>= 4.3.0 <= 4.3.6) • isc dhcp 4.1-esv • isc dhcp 4.1.0 • isc dhcp 4.4.0 • redhat enterprise linux desktop 6.0 • redhat enterprise linux desktop 7.0 • redhat enterprise linux server 6.0 • redhat enterprise linux server 7.0 • redhat enterprise linux server aus 7.4 • redhat enterprise linux server aus 7.6 • redhat enterprise linux server eus 7.4 • redhat enterprise linux server eus 7.5 • redhat enterprise linux server eus 7.6 • redhat enterprise linux workstation 6.0 • redhat enterprise linux workstation 7.0 • canonical ubuntu linux 14.04 • canonical ubuntu linux 16.04 • canonical ubuntu linux 17.10 • debian debian linux 7.0 • debian debian linux 8.0 • debian debian linux 9.0

Related

Weakness · CWE (1)

  • CWE-190 Integer Overflow or Wraparound weakness

References