CVE-2018-5733
High
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.
SeverityHigh
CVSS7.5
Exploit probability—
Product
Isc Dhcp
PublishedJan 16, 2019
First seenJan 16, 2019
How to fix
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| isc dhcp | 4.2.0 ≤ v ≤ 4.2.8, 4.3.0 ≤ v ≤ 4.3.6, 4.1-esv, 4.1.0, 4.4.0 | — |
| redhat enterprise_linux_desktop | 6.0, 7.0 | — |
| redhat enterprise_linux_server | 6.0, 7.0 | — |
| redhat enterprise_linux_server_aus | 7.4, 7.6 | — |
| redhat enterprise_linux_server_eus | 7.4, 7.5, 7.6 | — |
| redhat enterprise_linux_workstation | 6.0, 7.0 | — |
| canonical ubuntu_linux | 14.04, 16.04, 17.10 | — |
| debian debian_linux | 7.0, 8.0, 9.0 | — |
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