Vulnerability Details : 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.
Vulnerability category: Overflow
Published 2019-01-16 20:29:01
Updated 2020-01-09 21:08:06
Source Internet Systems Consortium (ISC)
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2018-5733

Probability of exploitation activity in the next 30 days: 11.34%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 94 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2018-5733

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Source
5.0
 MEDIUM AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
 nvd@nist.gov
5.9
 MEDIUM CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
2.2
3.6
 security-officer@isc.org
7.5
 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.9
3.6
 nvd@nist.gov

CWE ids for CVE-2018-5733

  • The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2018-5733

Products affected by CVE-2018-5733

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