CVE-2018-20679
high-risk
Published 2019-01-09
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.
Do I need to act?
!
12.0% chance of exploitation in next 30 days
EPSS score — higher than 88% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10
High
NETWORK
/ LOW complexity
Affected Products (5)
References (14)
Release Notes
https://busybox.net/news.html
Third Party Advisory
https://usn.ubuntu.com/3935-1/
Release Notes
https://busybox.net/news.html
Third Party Advisory
https://usn.ubuntu.com/3935-1/
50
/ 100
high-risk
Severity
26/34 · High
Exploitability
12/34 · Low
Exposure
12/34 · Low