busybox: NTP server denial of service flaw
Published Dec 9, 2016
7.5
HIGHCVSS 3.1
EPSS 8.97%
Description
The recv_and_process_client_pkt function in networking/ntpd.c in busybox allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged NTP packet, which triggers a communication loop.
Affected products
No data.
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AV:N/AC:L/Au:N/C:N/I:N/A:C
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
YesTechnical Impact
PartialDecision
n/aAssessed Dec 4, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 8.97% (0.08967) | 95.11th | v5 (v2026.06.15) |
| Jun 15, 2026 | 8.89% (0.08894) | 94.54th | v5 (v2026.06.15) |
| May 22, 2026 | 4.88% (0.04880) | 89.68th | v4 (v2025.03.14) |
| Dec 5, 2025 | 3.13% (0.03125) | 86.39th | v4 (v2025.03.14) |
| Sep 10, 2025 | 4.75% (0.04752) | 89.02th | v4 (v2025.03.14) |
| Sep 3, 2025 | 6.10% (0.06096) | 90.47th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.46% (0.04465) | 88.04th | v4 (v2025.03.14) |
| Mar 29, 2025 | 25.74% (0.25735) | 93.95th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.46% (0.04465) | 88.34th | v4 (v2025.03.14) |
| Dec 17, 2024 | 10.44% (0.10441) | 94.99th | v3 (v2023.03.01) |
| Mar 11, 2024 | 4.86% (0.04858) | 92.54th | v3 (v2023.03.01) |
| Dec 22, 2023 | 4.32% (0.04323) | 91.46th | v3 (v2023.03.01) |
| Nov 12, 2023 | 3.71% (0.03705) | 90.74th | v3 (v2023.03.01) |
| Sep 30, 2023 | 3.49% (0.03487) | 90.38th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.94% (0.02936) | 89.27th | 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) |
References (16)
- http://packetstormsecurity.com/files/153278/WAGO-852-Industrial-Managed-Switch-Series-Code-Execution-Hardcoded-Credentials.html x_refsource_MISC
- http://packetstormsecurity.com/files/154361/Cisco-Device-Hardcoded-Credentials-GNU-glibc-BusyBox.html x_refsource_MISC
- http://seclists.org/fulldisclosure/2019/Jun/18 mailing-listx_refsource_FULLDISC
- http://seclists.org/fulldisclosure/2019/Sep/7 mailing-listx_refsource_FULLDISC
- http://seclists.org/fulldisclosure/2020/Aug/20 mailing-listx_refsource_FULLDISC
- http://seclists.org/fulldisclosure/2020/Mar/15 mailing-listx_refsource_FULLDISC
- http://www.openwall.com/lists/oss-security/2016/08/03/7 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.securityfocus.com/bid/92277 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2016-6301 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1363710 x_refsource_CONFIRMIssue TrackingThird Party Advisory
- https://git.busybox.net/busybox/commit/?id=150dc7a2b483b8338a3e185c478b4b23ee884e71 x_refsource_CONFIRMIssue TrackingPatch
- https://nvd.nist.gov/vuln/detail/CVE-2016-6301
- https://seclists.org/bugtraq/2019/Jun/14 mailing-listx_refsource_BUGTRAQ
- https://seclists.org/bugtraq/2019/Sep/7 mailing-listx_refsource_BUGTRAQ
- https://security.gentoo.org/glsa/201701-05 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2016-6301
Change history (0)
No recorded changes yet.