7.5
HIGH
CVE-2018-5733
BIND-ISC DHCP 32-Bit Reference Counter Overflow
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.

INFO

Published Date :

Jan. 16, 2019, 8:29 p.m.

Last Modified :

Jan. 9, 2020, 9:08 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2018-5733 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Redhat enterprise_linux_desktop
2 Redhat enterprise_linux_server
3 Redhat enterprise_linux_workstation
4 Redhat enterprise_linux_server_aus
5 Redhat enterprise_linux_server_eus
1 Canonical ubuntu_linux
1 Debian debian_linux
1 Isc dhcp
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-5733.

URL Resource
http://www.securityfocus.com/bid/103188 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1040437 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0469 Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:0483 Third Party Advisory
https://kb.isc.org/docs/aa-01567 Vendor Advisory
https://lists.debian.org/debian-lts-announce/2018/03/msg00015.html Third Party Advisory
https://usn.ubuntu.com/3586-1/ Third Party Advisory
https://usn.ubuntu.com/3586-2/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4133 Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-5733 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-5733 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Modified Analysis by [email protected]

    Jan. 09, 2020

    Action Type Old Value New Value
    Removed CVSS V3 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed CPE Configuration OR *cpe:2.3:a:isc:dhcp:4.1-esv:*:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r10:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r10_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r10_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r11:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r11_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc2:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r12:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r12_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r12_p1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r13:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r13_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r14:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r14_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r15:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r2:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r3:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r3_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r4:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r5:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r5_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc2:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r6:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r7:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r8:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r8_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r8_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r9:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r9_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r9_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1.0:*:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:*:*:*:*:*:*:*:* versions from (including) 4.2.0 up to (including) 4.2.8 *cpe:2.3:a:isc:dhcp:*:*:*:*:*:*:*:* versions from (including) 4.3.0 up to (including) 4.3.6 *cpe:2.3:a:isc:dhcp:4.4.0:*:*:*:*:*:*:* OR *cpe:2.3:a:isc:dhcp:4.1-esv:-:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r10:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r10_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r10_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r11:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r11_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc2:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r12:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r12_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r12_p1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r13:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r13_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r14:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r14_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r15:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r2:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r3:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r3_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r4:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r5:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r5_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc2:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r6:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r7:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r8:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r8_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r8_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r9:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r9_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r9_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1.0:-:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:*:*:*:*:*:*:*:* versions from (including) 4.2.0 up to (including) 4.2.8 *cpe:2.3:a:isc:dhcp:*:*:*:*:*:*:*:* versions from (including) 4.3.0 up to (including) 4.3.6 *cpe:2.3:a:isc:dhcp:4.4.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 09, 2019

    Action Type Old Value New Value
    Added CVSS V3 Internet Systems Consortium (ISC) AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  • Initial Analysis by [email protected]

    Feb. 07, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:P)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2018/03/msg00015.html No Types Assigned https://lists.debian.org/debian-lts-announce/2018/03/msg00015.html Third Party Advisory
    Changed Reference Type http://www.securitytracker.com/id/1040437 No Types Assigned http://www.securitytracker.com/id/1040437 Third Party Advisory, VDB Entry
    Changed Reference Type http://www.securityfocus.com/bid/103188 No Types Assigned http://www.securityfocus.com/bid/103188 Third Party Advisory, VDB Entry
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:0469 No Types Assigned https://access.redhat.com/errata/RHSA-2018:0469 Third Party Advisory
    Changed Reference Type https://kb.isc.org/docs/aa-01567 No Types Assigned https://kb.isc.org/docs/aa-01567 Vendor Advisory
    Changed Reference Type https://www.debian.org/security/2018/dsa-4133 No Types Assigned https://www.debian.org/security/2018/dsa-4133 Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/3586-1/ No Types Assigned https://usn.ubuntu.com/3586-1/ Third Party Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2018:0483 No Types Assigned https://access.redhat.com/errata/RHSA-2018:0483 Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/3586-2/ No Types Assigned https://usn.ubuntu.com/3586-2/ Third Party Advisory
    Added CWE CWE-190
    Added CPE Configuration OR *cpe:2.3:a:isc:dhcp:4.1-esv:*:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r10:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r10_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r10_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r11:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r11_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r11_rc2:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r12:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r12_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r12_p1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r13:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r13_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r14:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r14_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r15:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r2:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r3:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r3_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r4:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r5:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r5_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r5_rc2:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r6:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r7:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r8:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r8_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r8_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r9:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r9_b1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:r9_rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1-esv:rc1:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:4.1.0:*:*:*:*:*:*:* *cpe:2.3:a:isc:dhcp:*:*:*:*:*:*:*:* versions from (including) 4.2.0 up to (including) 4.2.8 *cpe:2.3:a:isc:dhcp:*:*:*:*:*:*:*:* versions from (including) 4.3.0 up to (including) 4.3.6 *cpe:2.3:a:isc:dhcp:4.4.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server:6.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_eus:7.4:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_workstation:6.0:*:*:*:*:*:*:* *cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:17.10:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jan. 17, 2019

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2018/dsa-4133 [No Types Assigned]
    Added Reference https://usn.ubuntu.com/3586-2/ [No Types Assigned]
    Added Reference https://usn.ubuntu.com/3586-1/ [No Types Assigned]
    Added Reference https://lists.debian.org/debian-lts-announce/2018/03/msg00015.html [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:0483 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2018:0469 [No Types Assigned]
    Added Reference http://www.securitytracker.com/id/1040437 [No Types Assigned]
    Added Reference http://www.securityfocus.com/bid/103188 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-5733 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2018-5733 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

7.33 }} -1.29%

score

0.94239

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability