Public proof of conceptFix available

CVE-2018-1111

A public proof of concept exists; no exploitation attested.

Published2018-05-17
WeaknessCWE-77 · CWE-78

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

DHCP packages in Red Hat Enterprise Linux 6 and 7, Fedora 28, and earlier are vulnerable to a command injection flaw in the NetworkManager integration script included in the DHCP client. A malicious DHCP server, or an attacker on the local network able to spoof DHCP responses, could use this flaw to execute arbitrary commands with root privileges on systems using NetworkManager and configured to obtain network configuration using the DHCP protocol.

Timeline

dates in UTC

2018-05-1716:29CVE publishedNVD
2018-05-18Exploit-DB entryExploit-DB

Observed activity

isMalicious corpus · updated 2026-11-04 09:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-1111?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-1111?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Redhat enterprise linux

Branch	Affected	Fixed in	Source
6.0	= 6.0	no fix published	NVD
6.4	= 6.4	no fix published	NVD
6.5	= 6.5	no fix published	NVD
6.6	= 6.6	no fix published	NVD
6.7	= 6.7	no fix published	NVD
7.0	= 7.0	no fix published	NVD
7.2	= 7.2	no fix published	NVD
7.3	= 7.3	no fix published	NVD
7.4	= 7.4	no fix published	NVD
7.5	= 7.5	no fix published	NVD

Fedoraproject fedora

Branch	Affected	Fixed in	Source
26.x	= 26	no fix published	NVD
27.x	= 27	no fix published	NVD
28.x	= 28	no fix published	NVD

Redhat enterprise linux desktop

Branch	Affected	Fixed in	Source
6.0	= 6.0	no fix published	NVD
7.0	= 7.0	no fix published	NVD

4 more products in the sources.

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

dhcpRed Hat:rhel_tus:7.2::serverall versions · fixed in 12:4.2.5-42.el7_2.1and 5 other packages
dhcpRed Hat:rhel_tus:6.6::serverall versions · fixed in 12:4.1.1-43.P1.el6_6.2and 4 other packages
dhcpRed Hat:rhel_eus:7.4::serverall versions · fixed in 12:4.2.5-58.el7_4.4and 5 other packages
dhcpRed Hat:rhel_eus:7.4::computenodeall versions · fixed in 12:4.2.5-58.el7_4.4and 5 other packages
dhcpRed Hat:rhel_eus:7.3::serverall versions · fixed in 12:4.2.5-47.el7_3.1and 5 other packages
dhcpRed Hat:rhel_eus:7.3::computenodeall versions · fixed in 12:4.2.5-47.el7_3.1and 5 other packages
dhcpRed Hat:rhel_eus:6.7::serverall versions · fixed in 12:4.1.1-49.P1.el6_7.1and 4 other packages
dhcpRed Hat:rhel_eus:6.7::computenodeall versions · fixed in 12:4.1.1-49.P1.el6_7.1and 4 other packages

18 more package ranges on OSV.dev

Vendor advisories

CVE-2018-1111 Red Hat Product Security399 products fixed
dhcp: Command injection vulnerability in the DHCP client NetworkManager integration script
RHSA-2018:1525 Red Hat Product Security4 products fixed
Red Hat Security Advisory: rhvm-appliance security and enhancement update
RHSA-2018:1524 Red Hat Product Security10 products fixed
Red Hat Security Advisory: redhat-virtualization-host bug fix and enhancement update
RHSA-2018:1453 Red Hat Product Security103 products fixed
Red Hat Security Advisory: dhcp security update
RHSA-2018:1454 Red Hat Product Security64 products fixed
Red Hat Security Advisory: dhcp security update
RHSA-2018:1456 Red Hat Product Security53 products fixed
Red Hat Security Advisory: dhcp security update

6 more advisories

Full record on NVD

Fix

Vendor fix Red Hat Product Security RHSA-2018:1525 · 4 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/2974891
Vendor fix Red Hat Product Security RHSA-2018:1524 · 10 productsBefore applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/2974891
Vendor fix Red Hat Product Security RHSA-2018:1453 · 103 productsFor details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Workaround from the vendor Red Hat Product Security RHSA-2018:1525 · 4 productsPlease access https://access.redhat.com/security/vulnerabilities/3442151 for information on how to mitigate this issue.

Advisories and patches

access.redhat.comVendor Advisory
access.redhat.comVendor Advisory
access.redhat.comVendor Advisory
access.redhat.comVendor Advisory
access.redhat.comVendor Advisory
access.redhat.comVendor Advisory

Detection

read 2026-11-03 22:42 UTC

Nuclei template: none so far
Exploit-DB: EDB-44652 EDB-44890
Proof-of-concept repositories: 3 repositories, unverifiedknqyf263/CVE-2018-1111kkirsche/CVE-2018-1111baldassarreFe/FEP3370-advanced-ethical-hacking
Metasploit modules: 1 moduleexploit/unix/dhcp/rhel_dhcp_client_command_injectionrank: excellentModule metadata: Metasploit Framework, © Rapid7, Inc., BSD-3-Clause.

Sources

CNACVSS 3.07.5known since 2026-10-23
NVDCVSS 3.07.5read 2026-10-23
NVDCVSS 2.07.9read 2026-10-23
CNAweakness (CWE)CWE-77known since 2026-10-23
NVDweakness (CWE)CWE-78read 2026-10-23
FIRST EPSSEPSS score97.9 %read 2026-11-03
PoC-in-GitHubproof of concept3read 2026-11-03
Exploit-DBdetectionread 2026-11-03
Metasploit FrameworkMetasploit modules1known since 2026-11-01
OSVaffected packages—

Identifiers

EUVD-2018-11756same flawENISA EUVD · LicenseRef-ENISA-legal-notice
exploit/unix/dhcp/rhel_dhcp_client_command_injectionexploit moduleMetasploit Framework © Rapid7 · BSD-3-Clause
EDB-44652exploit referenceExploit-DB · BSD-3-Clause
RHSA-2018:1453advisory covering several CVEsRed Hat · CC-BY-4.0
RHSA-2018:1454advisory covering several CVEsRed Hat · CC-BY-4.0
RHSA-2018:1455advisory covering several CVEsRed Hat · CC-BY-4.0
RHSA-2018:1456advisory covering several CVEsRed Hat · CC-BY-4.0
RHSA-2018:1457advisory covering several CVEsRed Hat · CC-BY-4.0
RHSA-2018:1458advisory covering several CVEsRed Hat · CC-BY-4.0
RHSA-2018:1459advisory covering several CVEsRed Hat · CC-BY-4.0
RHSA-2018:1460advisory covering several CVEsRed Hat · CC-BY-4.0
RHSA-2018:1461advisory covering several CVEsRed Hat · CC-BY-4.0
RHSA-2018:1524advisory covering several CVEsRed Hat · CC-BY-4.0
RHSA-2018:1525advisory covering several CVEsRed Hat · CC-BY-4.0

Technical details

CVSS v3 Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2018-05-17
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2018-1111?

Is CVE-2018-1111 actively exploited?

Active exploitation of CVE-2018-1111 has not been confirmed. Its EPSS score was 97.9% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2018-1111?

CVE-2018-1111 has a CVSS v3 base score of 7.5 (HIGH severity), with vector string CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

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