CVE-2018-5733
7.5 · HIGHOverview
CVE-2018-5733 is a high-severity vulnerability affecting isc dhcp. It was published on January 16, 2019 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from isc. Update dhcp to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| isc | dhcp | 4.2.0 | Affected |
References
Frequently Asked Questions
What is CVE-2018-5733?
CVE-2018-5733 is a high-severity vulnerability affecting isc dhcp. It was published on January 16, 2019 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2018-5733?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2018-5733?
Check the references section for vendor advisories and patches from isc. Update dhcp to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2018-5733?
CyberStrike's AI-powered security agents can automatically detect CVE-2018-5733 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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