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CVE-2018-5733

Date: January 16, 2019

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.

Language: C

Severity Score

Related Resources (15)

https://lists.debian.org/debian-lts-announce/2018/03/msg00015.html
https://access.redhat.com/security/cve/CVE-2018-5733
https://security.alpinelinux.org/vuln/CVE-2018-5733
http://www.securityfocus.com/bid/103188
https://security-tracker.debian.org/tracker/CVE-2018-5733
https://access.redhat.com/errata/RHSA-2018:0469
https://www.debian.org/security/2018/dsa-4133
https://usn.ubuntu.com/3586-1/
https://usn.ubuntu.com/3586-2/
http://www.securitytracker.com/id/1040437
https://nvd.nist.gov/vuln/detail/CVE-2018-5733
https://kb.isc.org/docs/aa-01567
https://security.netapp.com/advisory/ntap-20250425-0010/
https://access.redhat.com/errata/RHSA-2018:0483
https://www.mend.io/vulnerability-database/CVE-2018-5733

Severity Score

Weakness Type (CWE)

Integer Overflow or Wraparound

CWE-190

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): PARTIAL
Additional information:

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