CVE-2018-5733
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.
- Score
- CVSS 3.1 7.5 High
- Status
- Modified - security-officer@isc.org
- Published
- 2019-01-16
- Last modified
- 2025-04-25
- Weaknesses
- CWE-190
Affected products
- Ubuntu Linux (Canonical)
- Debian Linux (Debian)
- Dhcp (Isc)
- Isc Dhcp (Isc)
- Enterprise Linux Desktop (Redhat)
- Enterprise Linux Server (Redhat)
- Enterprise Linux Server Aus (Redhat)
- Enterprise Linux Server Eus (Redhat)
- Enterprise Linux Workstation (Redhat)
References
- http://www.securityfocus.com/bid/103188
- http://www.securitytracker.com/id/1040437
- https://access.redhat.com/errata/RHSA-2018:0469
- https://access.redhat.com/errata/RHSA-2018:0483
- https://kb.isc.org/docs/aa-01567
- https://lists.debian.org/debian-lts-announce/2018/03/msg00015.html
- https://usn.ubuntu.com/3586-1/
- https://usn.ubuntu.com/3586-2/
- https://www.debian.org/security/2018/dsa-4133
- https://security.netapp.com/advisory/ntap-20250425-0010/
