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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.
Publish Date : 2019-01-16 Last Update Date : 2020-01-09
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Overflow
CWE ID 190

- Related OVAL Definitions

Title Definition Id Class Family
RHSA-2018:0469: dhcp security update (Important) oval:com.redhat.rhsa:def:20180469 unix
RHSA-2018:0483: dhcp security update (Important) oval:com.redhat.rhsa:def:20180483 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2018-5733

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 14.04 * * * Version Details Vulnerabilities
2 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
3 OS Canonical Ubuntu Linux 17.10 * * * Version Details Vulnerabilities
4 OS Debian Debian Linux 7.0 * * * Version Details Vulnerabilities
5 OS Debian Debian Linux 8.0 * * * Version Details Vulnerabilities
6 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
7 Application ISC Dhcp * * * * Version Details Vulnerabilities
8 Application ISC Dhcp 4.1-esv R12 P1 * * Version Details Vulnerabilities
9 Application ISC Dhcp 4.1-esv R5 Rc1 * * Version Details Vulnerabilities
10 Application ISC Dhcp 4.1-esv R11 B1 * * Version Details Vulnerabilities
11 Application ISC Dhcp 4.1-esv R8 * * Version Details Vulnerabilities
12 Application ISC Dhcp 4.1-esv R2 * * Version Details Vulnerabilities
13 Application ISC Dhcp 4.1-esv R1 * * Version Details Vulnerabilities
14 Application ISC Dhcp 4.1-esv R13 * * Version Details Vulnerabilities
15 Application ISC Dhcp 4.1-esv R5 Rc2 * * Version Details Vulnerabilities
16 Application ISC Dhcp 4.1-esv R11 Rc1 * * Version Details Vulnerabilities
17 Application ISC Dhcp 4.1-esv R7 * * Version Details Vulnerabilities
18 Application ISC Dhcp 4.1-esv R10 * * Version Details Vulnerabilities
19 Application ISC Dhcp 4.1-esv R3 * * Version Details Vulnerabilities
20 Application ISC Dhcp 4.1-esv R13 B1 * * Version Details Vulnerabilities
21 Application ISC Dhcp 4.1-esv R8 Rc1 * * Version Details Vulnerabilities
22 Application ISC Dhcp 4.1-esv R11 Rc2 * * Version Details Vulnerabilities
23 Application ISC Dhcp 4.1-esv R6 * * Version Details Vulnerabilities
24 Application ISC Dhcp 4.1-esv R10 B1 * * Version Details Vulnerabilities
25 Application ISC Dhcp 4.1-esv R9 Rc1 * * Version Details Vulnerabilities
26 Application ISC Dhcp 4.1-esv R3 B1 * * Version Details Vulnerabilities
27 Application ISC Dhcp 4.1-esv R14 * * Version Details Vulnerabilities
28 Application ISC Dhcp 4.1-esv R9 * * Version Details Vulnerabilities
29 Application ISC Dhcp 4.1-esv R12 * * Version Details Vulnerabilities
30 Application ISC Dhcp 4.1-esv R4 * * Version Details Vulnerabilities
31 Application ISC Dhcp 4.1-esv R9 B1 * * Version Details Vulnerabilities
32 Application ISC Dhcp 4.1-esv R5 * * Version Details Vulnerabilities
33 Application ISC Dhcp 4.1-esv R10 Rc1 * * Version Details Vulnerabilities
34 Application ISC Dhcp 4.1-esv R14 B1 * * Version Details Vulnerabilities
35 Application ISC Dhcp 4.1-esv RC1 * * Version Details Vulnerabilities
36 Application ISC Dhcp 4.1-esv R12 B1 * * Version Details Vulnerabilities
37 Application ISC Dhcp 4.1-esv R8 B1 * * Version Details Vulnerabilities
38 Application ISC Dhcp 4.1-esv R5 B1 * * Version Details Vulnerabilities
39 Application ISC Dhcp 4.1-esv R11 * * Version Details Vulnerabilities
40 Application ISC Dhcp 4.1-esv R15 * * Version Details Vulnerabilities
41 Application ISC Dhcp 4.1-esv - * * Version Details Vulnerabilities
42 Application ISC Dhcp 4.1.0 - * * Version Details Vulnerabilities
43 Application ISC Dhcp 4.4.0 * * * Version Details Vulnerabilities
44 OS Redhat Enterprise Linux Desktop 6.0 * * * Version Details Vulnerabilities
45 OS Redhat Enterprise Linux Desktop 7.0 * * * Version Details Vulnerabilities
46 OS Redhat Enterprise Linux Server 6.0 * * * Version Details Vulnerabilities
47 OS Redhat Enterprise Linux Server 7.0 * * * Version Details Vulnerabilities
48 OS Redhat Enterprise Linux Server Aus 7.4 * * * Version Details Vulnerabilities
49 OS Redhat Enterprise Linux Server Aus 7.6 * * * Version Details Vulnerabilities
50 OS Redhat Enterprise Linux Server Eus 7.4 * * * Version Details Vulnerabilities
51 OS Redhat Enterprise Linux Server Eus 7.5 * * * Version Details Vulnerabilities
52 OS Redhat Enterprise Linux Server Eus 7.6 * * * Version Details Vulnerabilities
53 OS Redhat Enterprise Linux Workstation 6.0 * * * Version Details Vulnerabilities
54 OS Redhat Enterprise Linux Workstation 7.0 * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 3
Debian Debian Linux 3
ISC Dhcp 37
Redhat Enterprise Linux Desktop 2
Redhat Enterprise Linux Server 2
Redhat Enterprise Linux Server Aus 2
Redhat Enterprise Linux Server Eus 3
Redhat Enterprise Linux Workstation 2

- References For CVE-2018-5733

http://www.securityfocus.com/bid/103188
BID 103188 ISC DHCP CVE-2018-5733 Remote Denial of Service Vulnerability Release Date:2018-05-01
http://www.securitytracker.com/id/1040437
SECTRACK 1040437
https://access.redhat.com/errata/RHSA-2018:0483
REDHAT RHSA-2018:0483
https://access.redhat.com/errata/RHSA-2018:0469
REDHAT RHSA-2018:0469
https://usn.ubuntu.com/3586-2/
UBUNTU USN-3586-2
https://usn.ubuntu.com/3586-1/
UBUNTU USN-3586-1
https://lists.debian.org/debian-lts-announce/2018/03/msg00015.html
MLIST [debian-lts-announce] 20180322 [SECURITY] [DLA 1313-1] isc-dhcp security update
https://www.debian.org/security/2018/dsa-4133
DEBIAN DSA-4133
https://kb.isc.org/docs/aa-01567 CONFIRM

- Metasploit Modules Related To CVE-2018-5733

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)
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