Heap-based buffer overflow in BusyBox - CVE-2016-2148
Published: June 4, 2019
Vulnerability identifier: #VU18673
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2016-2148
CWE-ID: CWE-122
Exploitation vector: Adjecent network
Exploit availability:
No public exploit available
Vendor: busybox.net
Affected software:
BusyBox
BusyBox
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in udhcpc client when parsing DHCP packets with specially crafted OPTION_6RD option. A remote attacker can trick the victim to connect to malicious DHCP server, trigger heap-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
How to mitigate CVE-2016-2148
Install update from vendor's website.
Sources
- http://www.openwall.com/lists/oss-security/2016/03/11/16
- https://busybox.net/news.html
- https://git.busybox.net/busybox/commit/?id=352f79acbd759c14399e39baef21fc4ffe180ac2
- https://lists.debian.org/debian-lts-announce/2018/07/msg00037.html
- https://security.gentoo.org/glsa/201612-04
- https://usn.ubuntu.com/3935-1/