High severity7.5OSV Advisory· Published Jan 9, 2019· Updated Jun 17, 2026
CVE-2018-20679
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
54cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*+ 3 more
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
- osv-coords47 versionspkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Server%2015-LTSSpkg:rpm/suse/busybox&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/opensuse/virtualbox&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/virtualbox-kmp&distro=openSUSE%20Leap%2015.3pkg:rpm/opensuse/busybox&distro=openSUSE%20Leap%2015.3pkg:rpm/suse/busybox-static&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/opensuse/busybox&distro=openSUSE%20Tumbleweedpkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/busybox-static&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP2pkg:rpm/suse/busybox-static&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-ESPOSpkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015-LTSSpkg:rpm/suse/busybox-static&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/busybox-static&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/busybox-static&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015pkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP1pkg:rpm/suse/busybox-static&distro=SUSE%20Enterprise%20Storage%206pkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-LTSSpkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3pkg:rpm/suse/busybox-static&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-LTSSpkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-LTSSpkg:rpm/suse/busybox&distro=SUSE%20Manager%20Server%204.1pkg:rpm/suse/busybox&distro=SUSE%20Enterprise%20Storage%207pkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Real%20Time%2015%20SP2pkg:rpm/opensuse/busybox&distro=openSUSE%20Leap%2015.4pkg:rpm/suse/busybox&distro=SUSE%20OpenStack%20Cloud%209pkg:rpm/suse/busybox&distro=SUSE%20OpenStack%20Cloud%20Crowbar%209pkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP4pkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP2-BCLpkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP3-BCLpkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP4-LTSSpkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Server%2012%20SP5pkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2012%20SP5pkg:rpm/opensuse/busybox-static&distro=openSUSE%20Leap%2015.2pkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP2-BCLpkg:rpm/opensuse/busybox-static&distro=openSUSE%20Leap%2015.3pkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP4pkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP1-ESPOSpkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Server%20for%20SAP%20Applications%2015%20SP2pkg:rpm/suse/busybox&distro=SUSE%20Manager%20Proxy%204.1pkg:rpm/suse/busybox&distro=SUSE%20Manager%20Retail%20Branch%20Server%204.1pkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-BCLpkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20Server%2015%20SP1-LTSSpkg:rpm/suse/busybox&distro=SUSE%20Linux%20Enterprise%20High%20Performance%20Computing%2015%20SP2-ESPOSpkg:rpm/opensuse/busybox&distro=openSUSE%20Leap%2015.2
< 1.26.2-4.5.1+ 46 more
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 6.1.34-lp153.2.27.2
- (no CPE)range: < 6.1.34-lp153.2.27.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.35.0-1.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.34.1-4.9.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.34.1-4.9.1
- (no CPE)range: < 1.34.1-4.9.1
- (no CPE)range: < 1.34.1-4.9.1
- (no CPE)range: < 1.34.1-4.9.1
- (no CPE)range: < 1.35.0-150400.3.3.1
- (no CPE)range: < 1.35.0-4.3.1
- (no CPE)range: < 1.35.0-4.3.1
- (no CPE)range: < 1.35.0-4.3.1
- (no CPE)range: < 1.35.0-4.3.1
- (no CPE)range: < 1.35.0-4.3.1
- (no CPE)range: < 1.35.0-4.3.1
- (no CPE)range: < 1.35.0-4.3.1
- (no CPE)range: < 1.35.0-4.3.1
- (no CPE)range: < 1.26.2-lp152.5.3.1
- (no CPE)range: < 1.34.1-4.9.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.35.0-150400.3.3.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.34.1-4.9.1
- (no CPE)range: < 1.34.1-4.9.1
- (no CPE)range: < 1.34.1-4.9.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.26.2-4.5.1
- (no CPE)range: < 1.34.1-4.9.1
- (no CPE)range: < 1.26.2-lp152.5.3.1
Patches
Vulnerability mechanics
References
7- git.busybox.net/busybox/commit/nvdPatchThird Party Advisory
- bugs.busybox.net/show_bug.cginvdExploitIssue TrackingThird Party Advisory
- busybox.net/news.htmlnvdRelease NotesThird Party Advisory
- usn.ubuntu.com/3935-1/nvdThird Party Advisory
- packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.htmlnvd
- seclists.org/fulldisclosure/2019/Sep/7nvd
- seclists.org/bugtraq/2019/Sep/7nvd
News mentions
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