Description
An issue was discovered in BusyBox before 1.30.0. An out of bounds read in udhcp components (consumed by the DHCP server, client, and relay) allows a remote attacker to leak sensitive information from the stack by sending a crafted DHCP message. This is related to verification in udhcp_get_option() in networking/udhcp/common.c that 4-byte options are indeed 4 bytes.
Published: 2019-01-09
Score: 7.5 High
EPSS: 11.8% Moderate
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Ubuntu USN Ubuntu USN USN-3935-1 BusyBox vulnerabilities
History

Mon, 09 Jun 2025 16:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Subscriptions

Busybox Busybox
Canonical Ubuntu Linux
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2025-06-09T15:26:04.926Z

Reserved: 2019-01-09T00:00:00.000Z

Link: CVE-2018-20679

cve-icon Vulnrichment

Updated: 2024-08-05T12:05:17.686Z

cve-icon NVD

Status : Modified

Published: 2019-01-09T16:29:00.273

Modified: 2025-06-09T16:15:29.090

Link: CVE-2018-20679

cve-icon Redhat

Severity : Low

Publid Date: 2018-11-12T00:00:00Z

Links: CVE-2018-20679 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses