CVE-2018-20679
First published: Wed Jan 09 2019(Updated: )
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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Busybox Busybox | <1.30.0 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =18.10 | |
| Advantech Spectre RT ERT351 firmware Versions 5.1.3 and prior | ||
| debian/busybox | 1:1.30.1-6 1:1.35.0-4 1:1.37.0-4 |
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Reference Links
- http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html
- http://seclists.org/fulldisclosure/2019/Sep/7
- https://bugs.busybox.net/show_bug.cgi?id=11506
- https://busybox.net/news.html
- https://git.busybox.net/busybox/commit/?id=6d3b4bb24da9a07c263f3c1acf8df85382ff562c
- https://seclists.org/bugtraq/2019/Sep/7
- https://usn.ubuntu.com/3935-1/
- https://launchpad.net/bugs/cve/CVE-2018-20679
- https://git.busybox.net/busybox/commit/?id=74d9f1ba37010face4bd1449df4d60dd84450b06
- https://security-tracker.debian.org/tracker/CVE-2018-20679
- https://www.cisa.gov/news-events/ics-advisories/icsa-21-054-03 (Advisory)
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20679
- https://nvd.nist.gov/vuln/detail/CVE-2018-20679
- https://ubuntu.com/security/CVE-2018-20679
Frequently Asked Questions
What is CVE-2018-20679?
CVE-2018-20679 is a vulnerability in BusyBox before version 1.30.0 that allows a remote attacker to leak sensitive information from the stack.
How severe is CVE-2018-20679?
CVE-2018-20679 has a severity rating of 7.5 (high).
What is the affected software?
The affected software is BusyBox before version 1.30.0 on various Ubuntu and Canonical Ubuntu Linux versions.
How can I fix CVE-2018-20679?
To fix CVE-2018-20679, update BusyBox to version 1.30.0 or later.
Where can I find more information about CVE-2018-20679?
You can find more information about CVE-2018-20679 at the following references: [1] [2] [3].
- collector/nvd-index
- agent/type
- collector/launchpad-cve
- source/Launchpad
- agent/author
- agent/remedy
- agent/weakness
- agent/severity
- collector/ics-cert-advisory
- source/ICS
- alias/CVE-2016-6301
- alias/CVE-2015-9261
- agent/software-canonical-lookup
- agent/software-canonical-lookup-request
- collector/mitre-cve
- source/MITRE
- collector/usn-cve
- source/Ubuntu
- agent/references
- agent/description
- agent/first-publish-date
- agent/tags
- agent/event
- collector/security-tracker-debian
- source/Debian
- agent/softwarecombine
- collector/nvd-cve
- source/NVD
- agent/last-modified-date
- agent/trending
- vendor/busybox
- canonical/busybox busybox
- vendor/canonical
- canonical/canonical ubuntu linux
- version/canonical ubuntu linux/14.04
- version/canonical ubuntu linux/16.04
- version/canonical ubuntu linux/18.04
- version/canonical ubuntu linux/18.10
- vendor/advantech
- canonical/advantech spectre rt ert351 firmware versions 5.1.3 and prior
- package-manager/debian