CVE-2016-2147: busybox Integer Overflow or Wraparound
Vulnerability summary
CVE-2016-2147 is a high (CVSS 7.5) Integer Overflow or Wraparound vulnerability in busybox. EPSS estimates a 7.80% chance of exploitation in the next 30 days, higher than 94.6% of scored vulnerabilities. 7 public exploits are recorded.
Advisory lineage
Upstream 0 · Downstream 9 · Related 7Timeline
- 09-02-2017PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
6 scores · 4 sources · 3 versions- OSV · AlpineEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · UbuntuEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated7.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS trend
Probability
7.80%
Chance of exploitation in the next 30 days
Percentile
95%
Versus all other CVEs
30-day change
+0.10 pp
From 7.71% on 18-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
7 foundExploit Reference (seclists.org)
Maturity: unknown
Exploit Reference (seclists.org)
Maturity: unknown
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
Show all 7 exploits
Exploit Reference (seclists.org)
Maturity: unknown
Exploit Reference (seclists.org)
Maturity: unknown
Exploit Reference (packetstormsecurity.com)
Maturity: unknown
Exploit Reference (seclists.org)
Maturity: unknown
Weaknesses
CWE · root causeAffected systems
Debian2 products
- busybox< 1:1.27.2-1
- debian_linuxEOL8.0 | 9.0
Alpine1 product
- busybox< 1.24.2-r0
Busybox1 product
- busybox≤ 1.24.2
Canonical1 product
- ubuntu_linuxEOL14.04 | 16.04 | 18.04 | 18.10
Ubuntu1 product
- busybox< 1:1.21.0-1ubuntu1.4 | < 1:1.22.0-15ubuntu1.4
5 vendors · 6 products
References
19 links- git.busybox.net/busybox/commit/?id=d474ffc68290e0a83651c4432eeabfa62cd51e87X Refsource CONFIRMPatchVendor Advisory
- www.openwall.com/lists/oss-security/2016/03/11/16Mailing ListX Refsource MLISTPatchThird Party Advisory
lists.debian.org/debian-lts-announce/2018/07/msg00037.htmlMailing ListX Refsource MLISTThird Party Advisory
Show all 19 references
- packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.htmlX Refsource MISCExploitThird Party AdvisoryVDB Entry
- lists.debian.org/debian-lts-announce/2021/02/msg00020.htmlMailing ListX Refsource MLISTThird Party Advisory