| Name | CVE-2018-20679 |
| 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| Debian Bugs | 918846 |
Vulnerable and fixed packages
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|
| busybox (PTS) | jessie, jessie (lts) | 1:1.22.0-9+deb8u5 | vulnerable |
| stretch (security), stretch (lts), stretch | 1:1.22.0-19+deb9u2 | vulnerable |
| buster | 1:1.30.1-4 | fixed |
| bullseye | 1:1.30.1-6 | fixed |
| bookworm | 1:1.35.0-4 | fixed |
| sid, trixie | 1:1.36.1-6 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| busybox | source | (unstable) | 1:1.30.1-1 | low | | 918846 |
Notes
[stretch] - busybox <no-dsa> (Minor issue)
[jessie] - busybox <no-dsa> (Minor issue)
https://bugs.busybox.net/show_bug.cgi?id=11506
https://git.busybox.net/busybox/commit/?id=6d3b4bb24da9a07c263f3c1acf8df85382ff562c
When fixing this issue make sure to not open CVE-2019-5747 by only
applying the partial fix. The followup commit
https://git.busybox.net/busybox/commit/?id=74d9f1ba37010face4bd1449df4d60dd84450b06
is needed to fix the issue completely.
[wheezy] - busybox <ignored> (Minor issue)