CVE-2018-5733

HIGH

7.5

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.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/16/2019

Last Modified4/25/2025

Sourcenvd

Honeypot Sightings0

Affected Products

canonical:ubuntu_linuxdebian:debian_linuxisc:dhcpredhat:enterprise_linux_desktopredhat:enterprise_linux_serverredhat:enterprise_linux_server_ausredhat:enterprise_linux_server_eusredhat:enterprise_linux_workstation

Weaknesses (CWE)

CWE-190

References

http://www.securityfocus.com/bid/103188(security-officer@isc.org)

http://www.securitytracker.com/id/1040437(security-officer@isc.org)

https://access.redhat.com/errata/RHSA-2018:0469(security-officer@isc.org)

https://access.redhat.com/errata/RHSA-2018:0483(security-officer@isc.org)

https://kb.isc.org/docs/aa-01567(security-officer@isc.org)

https://lists.debian.org/debian-lts-announce/2018/03/msg00015.html(security-officer@isc.org)

https://usn.ubuntu.com/3586-1/(security-officer@isc.org)

https://usn.ubuntu.com/3586-2/(security-officer@isc.org)

https://www.debian.org/security/2018/dsa-4133(security-officer@isc.org)

http://www.securityfocus.com/bid/103188(af854a3a-2127-422b-91ae-364da2661108)

http://www.securitytracker.com/id/1040437(af854a3a-2127-422b-91ae-364da2661108)

https://access.redhat.com/errata/RHSA-2018:0469(af854a3a-2127-422b-91ae-364da2661108)

https://access.redhat.com/errata/RHSA-2018:0483(af854a3a-2127-422b-91ae-364da2661108)

https://kb.isc.org/docs/aa-01567(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2018/03/msg00015.html(af854a3a-2127-422b-91ae-364da2661108)

https://security.netapp.com/advisory/ntap-20250425-0010/(af854a3a-2127-422b-91ae-364da2661108)

https://usn.ubuntu.com/3586-1/(af854a3a-2127-422b-91ae-364da2661108)

https://usn.ubuntu.com/3586-2/(af854a3a-2127-422b-91ae-364da2661108)

https://www.debian.org/security/2018/dsa-4133(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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