ntp: multiple integer overflow read access violations
Published Jan 6, 2017
7.5
HIGHCVSS 3.1
EPSS 6.10%
Description
An integer overflow can occur in NTP-dev.4.3.70 leading to an out-of-bounds memory copy operation when processing a specially crafted private mode packet. The crafted packet needs to have the correct message authentication code and a valid timestamp. When processed by the NTP daemon, it leads to an immediate crash.
Affected products
No data.
Configuration 1
- n/a
- n/a
- n/a
- n/a
- n/a
Configuration 2
- ≥ 4.0 · < 4.2.8
- ≥ 4.3.0 · < 4.3.77
- 4.2.8
- 4.2.8
- 4.2.8
- 4.2.8
- 4.2.8
- 4.2.8
- 4.2.8
- 4.2.8
- 4.2.8
- 4.2.8
- 4.2.8
- 4.2.8
- 4.2.8
- 4.2.8
- 4.2.8
- 4.2.8
- 4.2.8
No data.
Red Hat Enterprise Linux 5
ntp
Not affected
Red Hat Enterprise Linux 6
ntp
Not affected
Red Hat Enterprise Linux 7
ntp
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | ntp | Not affected | n/a |
| Red Hat Enterprise Linux 6 | ntp | Not affected | n/a |
| Red Hat Enterprise Linux 7 | ntp | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of ntp as shipped with Red Hat Enterprise Linux 5, 6, and 7, as they do not include the affected functionality.
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
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.10% (0.06096) | 93.20th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.10% (0.06096) | 92.47th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.50% (0.01499) | 79.83th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.39% (0.00386) | 74.01th | v3 (v2023.03.01) |
| Jun 18, 2024 | 0.39% (0.00386) | 73.25th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.55% (0.00548) | 76.76th | v3 (v2023.03.01) |
| Apr 12, 2023 | 0.55% (0.00548) | 74.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.78% (0.00776) | 78.56th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.02% (0.01018) | 40.69th | v2 (v2022.01.01) |
| Sep 10, 2022 | 1.02% (0.01018) | 38.88th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.02% (0.01018) | 36.86th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.02% (0.01018) | 19.50th | v2 (v2022.01.01) |
References (11)
- http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_Security_Vulner
- http://talosintel.com/reports/TALOS-2015-0052/
- http://www.securityfocus.com/bid/77275 vdb-entryx_refsource_BIDBroken Link
- http://www.securitytracker.com/id/1033951 vdb-entryx_refsource_SECTRACKBroken Link
- http://www.talosintelligence.com/reports/TALOS-2015-0052/ x_refsource_MISCExploitTechnical DescriptionThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2015-7848 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1274256 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-7848
- https://security.gentoo.org/glsa/201607-15 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://security.netapp.com/advisory/ntap-20171004-0001/ x_refsource_CONFIRMThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2015-7848
| Link | Providers | Tags |
|---|---|---|
| http://support.ntp.org/bin/view/Main/SecurityNotice#October_2015_NTP_Security_Vulner | ||
| http://talosintel.com/reports/TALOS-2015-0052/ | ||
| http://www.securityfocus.com/bid/77275 | vdb-entryx_refsource_BIDBroken Link | |
| http://www.securitytracker.com/id/1033951 | vdb-entryx_refsource_SECTRACKBroken Link | |
| http://www.talosintelligence.com/reports/TALOS-2015-0052/ | x_refsource_MISCExploitTechnical DescriptionThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/security/cve/CVE-2015-7848 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1274256 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2015-7848 | ||
| https://security.gentoo.org/glsa/201607-15 | vendor-advisoryx_refsource_GENTOOThird Party Advisory | |
| https://security.netapp.com/advisory/ntap-20171004-0001/ | x_refsource_CONFIRMThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2015-7848 |
Change history (0)
No recorded changes yet.