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. Affects ISC DHCP versions 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-dhcp | Aug 22, 2024 | Oct 9, 2019 | |
| Amazon Linux Ami 2 | amazon-linux-ami-2-upgrade-dhclientamazon-linux-ami-2-upgrade-dhcpamazon-linux-ami-2-upgrade-dhcp-commonamazon-linux-ami-2-upgrade-dhcp-debuginfoamazon-linux-ami-2-upgrade-dhcp-develamazon-linux-ami-2-upgrade-dhcp-libs | Apr 27, 2020 | Oct 9, 2019 | |
| Amazon_linux | — | amazon-linux-upgrade-dhcp | Mar 2, 2020 | Mar 1, 2018 |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Oct 9, 2019 | |
| Centos_linux | — | centos-upgrade-dhclientcentos-upgrade-dhcpcentos-upgrade-dhcp-commoncentos-upgrade-dhcp-debuginfocentos-upgrade-dhcp-develcentos-upgrade-dhcp-libs | Jun 19, 2018 | Mar 1, 2018 |
| Debian | debian-upgrade-isc-dhcp | Feb 19, 2019 | Mar 7, 2018 | |
| F5 Big Ip | f5-bigip-upgrade-latest | Jun 17, 2026 | Mar 19, 2018 | |
| Freebsd | freebsd-upgrade-package-isc-dhcp44-serverfreebsd-upgrade-package-isc-dhcp44-clientfreebsd-upgrade-package-isc-dhcp43-serverfreebsd-upgrade-package-isc-dhcp43-client | Dec 10, 2025 | Mar 2, 2018 | |
| Gentoo Linux | gentoo-linux-upgrade-net-misc-dhcp | Apr 9, 2018 | Apr 8, 2018 | |
| Huawei Euleros 2_0_sp1 | huawei-euleros-2_0_sp1-upgrade-dhclienthuawei-euleros-2_0_sp1-upgrade-dhcphuawei-euleros-2_0_sp1-upgrade-dhcp-commonhuawei-euleros-2_0_sp1-upgrade-dhcp-libs | May 2, 2018 | Feb 28, 2018 | |
| Huawei Euleros 2_0_sp2 | huawei-euleros-2_0_sp2-upgrade-dhclienthuawei-euleros-2_0_sp2-upgrade-dhcphuawei-euleros-2_0_sp2-upgrade-dhcp-commonhuawei-euleros-2_0_sp2-upgrade-dhcp-libs | May 2, 2018 | Feb 28, 2018 | |
| Oracle Solaris | oracle-solaris-11-3-upgrade-service-network-dhcp-isc-dhcp-4-3-6-1-0-0-175-3-31-0-4-0 | Apr 18, 2018 | Apr 18, 2018 | |
| Oracle_linux | — | oracle-linux-upgrade-dhclientoracle-linux-upgrade-dhcporacle-linux-upgrade-dhcp-commonoracle-linux-upgrade-dhcp-develoracle-linux-upgrade-dhcp-libs | Mar 2, 2020 | Feb 28, 2018 |
| Redhat_linux | no-fix-redhat-rpm-packageredhat-upgrade-dhclientredhat-upgrade-dhcpredhat-upgrade-dhcp-commonredhat-upgrade-dhcp-debuginforedhat-upgrade-dhcp-develredhat-upgrade-dhcp-libs | May 1, 2018 | Mar 1, 2018 | |
| Suse | — | suse-upgrade-dhcpsuse-upgrade-dhcp-clientsuse-upgrade-dhcp-develsuse-upgrade-dhcp-relaysuse-upgrade-dhcp-server | Jun 21, 2018 | Mar 1, 2018 |
| Ubuntu | ubuntu-upgrade-isc-dhcp-clientubuntu-upgrade-isc-dhcp-relayubuntu-upgrade-isc-dhcp-serverubuntu-upgrade-isc-dhcp-server-ldap | Apr 26, 2018 | Mar 1, 2018 | |
| Vmware Photon_os | vmware-photon_os_update_tdnf | Jan 20, 2025 | Oct 9, 2019 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub