Integer overflow in Busybox
CVE-2016-2147
Integer overflow in the DHCP client (udhcpc) in BusyBox before 1.25.0 allows remote attackers to cause a denial of service (crash) via a malformed RFC1035-encoded domain name, which triggers an out-of-bounds heap write.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.078 (94.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.077 · newest: 0.078 · change: +0.001
Affected products
- Busybox
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- git.busybox.net/busybox/commit/ (Patch, Vendor Advisory)
- www.openwall.com/lists/oss-security/2016/03/11/16 (mailing-list, Patch, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/201612-04 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/07/msg00037.html (mailing-list, Mailing List, Third Party Advisory)
- busybox.net/news.html (Vendor Advisory)
- usn.ubuntu.com/3935-1/ (vendor-advisory, Third Party Advisory)
- seclists.org/fulldisclosure/2019/Jun/18 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- seclists.org/bugtraq/2019/Jun/14 (mailing-list, Exploit, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-… (Exploit, VDB Entry, Third Party Advisory)
- seclists.org/fulldisclosure/2019/Sep/7 (mailing-list, Exploit, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2016-2147?
- CVE-2016-2147 is a high-severity vulnerability in Busybox, classified under Integer Overflow or Wraparound. CVSS score: 7.5/10. Published 2017-02-09.
- How severe is CVE-2016-2147?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-2147 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.