CVE-2018-20679
HIGH7.5EPSS 13.0%Published: 1/9/2019Modified: 4/28/2026
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.
Affected packages (2)
- Alpine/busyboxfrom 0, < 1.29.3-r10
- Debian/busyboxfrom 0, < 1:1.30.1-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |