HIGH
busybox: out of bounds write (heap) due to integer underflow in udhcpc
Published Feb 9, 2017
7.5
HIGHCVSS 3.1
EPSS 7.71%
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.
Affected products
No data.
Configuration 2
OR
- 8.0
- 9.0
Configuration 3
OR
- 14.04
- 16.04
- 18.04
- 18.10
No data.
Red Hat Enterprise Linux 5
busybox
Will not fix
Red Hat Enterprise Linux 6
busybox
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | busybox | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | busybox | Will not fix | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
7.5 HIGH NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
No CVSS v3.0 score for this CVE.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
7.71% 0.07707
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.07707
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (21 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.71% (0.07707) | 94.43th | v5 (v2026.06.15) |
| Jun 15, 2026 | 8.05% (0.08055) | 94.04th | v5 (v2026.06.15) |
| Feb 1, 2026 | 9.07% (0.09068) | 92.47th | v4 (v2025.03.14) |
| Jan 21, 2026 | 7.42% (0.07425) | 91.50th | v4 (v2025.03.14) |
| Apr 9, 2025 | 2.96% (0.02963) | 85.34th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.03% (0.04025) | 87.41th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.96% (0.09960) | 88.29th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.03% (0.04025) | 87.71th | v4 (v2025.03.14) |
| Mar 11, 2025 | 8.95% (0.08945) | 94.76th | v3 (v2023.03.01) |
| Dec 17, 2024 | 7.59% (0.07592) | 94.12th | v3 (v2023.03.01) |
| Oct 30, 2024 | 10.27% (0.10270) | 95.13th | v3 (v2023.03.01) |
| May 12, 2024 | 8.77% (0.08771) | 94.50th | v3 (v2023.03.01) |
| Feb 22, 2024 | 7.85% (0.07850) | 94.02th | v3 (v2023.03.01) |
| Jan 13, 2024 | 6.77% (0.06772) | 93.19th | v3 (v2023.03.01) |
| Dec 1, 2023 | 6.39% (0.06390) | 92.90th | v3 (v2023.03.01) |
| May 16, 2023 | 5.41% (0.05412) | 91.95th | v3 (v2023.03.01) |
| May 8, 2023 | 7.37% (0.07371) | 93.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 5.97% (0.05974) | 92.30th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.78% (0.03779) | 85.48th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.78% (0.03779) | 84.01th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.78% (0.03779) | 67.21th | v2 (v2022.01.01) |
Weaknesses (2)
References (18)
- http://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentials.html x_refsource_MISCExploitThird Party AdvisoryVDB Entry
- http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html x_refsource_MISCExploitThird Party AdvisoryVDB Entry
- http://seclists.org/fulldisclosure/2019/Jun/18 mailing-listx_refsource_FULLDISCExploitMailing ListThird Party Advisory
- http://seclists.org/fulldisclosure/2019/Sep/7 mailing-listx_refsource_FULLDISCExploitMailing ListThird Party Advisory
- http://seclists.org/fulldisclosure/2020/Aug/20 mailing-listx_refsource_FULLDISCExploitMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/03/11/16 mailing-listx_refsource_MLISTMailing ListPatchThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2016-2147 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1316554 Issue Tracking
- https://busybox.net/news.html x_refsource_CONFIRMVendor Advisory
- https://git.busybox.net/busybox/commit/?id=d474ffc68290e0a83651c4432eeabfa62cd51e87 x_refsource_CONFIRMPatchVendor Advisory
- https://lists.debian.org/debian-lts-announce/2018/07/msg00037.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00020.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2016-2147
- https://seclists.org/bugtraq/2019/Jun/14 mailing-listx_refsource_BUGTRAQExploitMailing ListThird Party Advisory
- https://seclists.org/bugtraq/2019/Sep/7 mailing-listx_refsource_BUGTRAQExploitMailing ListThird Party Advisory
- https://security.gentoo.org/glsa/201612-04 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://usn.ubuntu.com/3935-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2016-2147
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Feb 9, 2017
Updated Aug 5, 2024
Reserved Jan 29, 2016
Link CVE-2016-2147
CISA Vulnrichment
Updated n/a