CVE-2018-20679 — Out-of-bounds Read in Busybox

CWE-125 — Out-of-bounds Read17 documents9 sources
Severity
7.5HIGHNVD
EPSS
12.0%
top 6.21%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
BusyboxDebian BusyboxCanonical Ubuntu Linux
Timeline
PublishedJan 9
Latest updateDec 29

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NExploitability: 3.9 | Impact: 3.6

Affected Packages4 packages

▶debiandebian/busybox< busybox 1:1.30.1-2 (bookworm)+1
▶NVDbusybox/busybox< 1.30.0+1
▶Debianbusybox/busybox< 1:1.30.1-1+7
▶Ubuntubusybox/busybox< 1:1.21.0-1ubuntu1.4+2

Also affects: Ubuntu Linux 14.04, 16.04, 18.04, 18.10

Patches

Patch: git.busybox.net ↗Patch: git.busybox.net ↗

🔴Vulnerability Details

5
GHSA
GHSA-73q8-6p6h-wvfh: An issue was discovered in BusyBox before 1↗2022-05-14
▶
GHSA
GHSA-h49r-cwwr-2hv6: An issue was discovered in BusyBox through 1↗2022-05-14
▶
OSV
busybox vulnerabilities↗2019-04-03
▶
OSV
CVE-2018-20679: An issue was discovered in BusyBox before 1↗2019-01-09
▶
OSV
CVE-2019-5747: An issue was discovered in BusyBox through 1↗2019-01-09
▶

📋Vendor Advisories

6
CISA ICS
Advantech Spectre RT Industrial Routers↗2021-02-23
▶
Ubuntu
BusyBox vulnerabilities↗2019-04-03
▶
Red Hat
busybox: Out of bounds read in udhcp components resulting in information disclosure↗2019-01-09
▶
Debian
CVE-2019-5747: busybox - An issue was discovered in BusyBox through 1.30.0. An out of bounds read in udhc...↗2019
▶
Red Hat
busybox: Out of bounds read in udhcp components resulting in information disclosure↗2018-11-12
▶

📄Research Papers

1
arXiv
One Bad Apple Spoils the Barrel: Understanding the Security Risks Introduced by Third-Party Components in IoT Firmware↗2022-12-29
▶

💬Community

3
Bugzilla
CVE-2019-5747 busybox: Out of bounds read in udhcp components resulting in information disclosure↗2019-01-17
▶
Bugzilla
CVE-2018-20679 busybox: Out of bounds read in udhcp components resulting in information disclosure [fedora-all]↗2019-01-16
▶
Bugzilla
CVE-2018-20679 busybox: Out of bounds read in udhcp components resulting in information disclosure↗2019-01-16
▶