CVE-2019-5747

busybox: Out of bounds read in udhcp components resulting in information disclosure

Published Jan 9, 2019 CVSS 3.1 · 7.5 High EPSS 4.7% KEV · Not listed
Description
An issue was discovered in BusyBox through 1.30.0. An out of bounds read in udhcp components (consumed by the DHCP client, server, and/or relay) might allow a remote attacker to leak sensitive information from the stack by sending a crafted DHCP message. This is related to assurance of a 4-byte length when decoding DHCP_SUBNET. NOTE: this issue exists because of an incomplete fix for CVE-2018-20679.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2019-15320 An issue was discovered in BusyBox through 1.30.0. An out of bounds read in udhcp components (consumed by the DHCP client, server, and/or relay) might allow a remote attacker to leak sensitive information from the stack by sending a crafted DHCP message. This is related to assurance of a 4-byte length when decoding DHCP_SUBNET. NOTE: this issue exists because of an incomplete fix for CVE-2018-20679.
Ubuntu USN Ubuntu USN USN-3935-1 BusyBox vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Jun 9, 2025, 3:28 PM
Reserved
Jan 9, 2019, 12:00 AM
Status
Modified
Published
Jan 9, 2019, 4:29 PM
Modified
Jun 17, 2026, 2:38 AM
Severity
Low
Public date
Jan 9, 2019, 12:00 AM