HIGH
ntp: buffer read overrun leads information leak in ctl_getitem()
Published Mar 6, 2018
7.5
HIGHCVSS 3.0
EPSS 28.83%
Description
The ctl_getitem method in ntpd in ntp-4.2.8p6 before 4.2.8p11 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted mode 6 packet with a ntpd instance from 4.2.8p6 through 4.2.8p10.
Affected products
No data.
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
Red Hat Enterprise Linux 8
ntp
Will not fix
| 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 |
| Red Hat Enterprise Linux 8 | ntp | 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.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/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
1 other source (Red Hat) ▾
5.3 MEDIUM Red Hat
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact Low
Integrity Impact None
Availability Impact None
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.
28.83% 0.28834
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.28834
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (40 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 28.83% (0.28834) | 98.10th | v5 (v2026.06.15) |
| Sep 22, 2026 | 28.83% (0.28834) | 98.06th | v5 (v2026.06.15) |
| Sep 21, 2026 | 25.34% (0.25342) | 97.90th | v5 (v2026.06.15) |
| Sep 6, 2026 | 28.83% (0.28834) | 98.02th | v5 (v2026.06.15) |
| Sep 5, 2026 | 25.34% (0.25342) | 97.85th | v5 (v2026.06.15) |
| Aug 30, 2026 | 28.83% (0.28834) | 98.01th | v5 (v2026.06.15) |
| Aug 28, 2026 | 25.34% (0.25342) | 97.84th | v5 (v2026.06.15) |
| Aug 24, 2026 | 28.83% (0.28834) | 98.00th | v5 (v2026.06.15) |
| Aug 23, 2026 | 25.34% (0.25342) | 97.83th | v5 (v2026.06.15) |
| Aug 15, 2026 | 28.83% (0.28834) | 97.98th | v5 (v2026.06.15) |
| Jun 15, 2026 | 29.85% (0.29850) | 97.96th | v5 (v2026.06.15) |
| Apr 13, 2026 | 11.08% (0.11077) | 93.45th | v4 (v2025.03.14) |
| Dec 20, 2025 | 14.26% (0.14259) | 94.16th | v4 (v2025.03.14) |
| Dec 15, 2025 | 17.36% (0.17358) | 94.82th | v4 (v2025.03.14) |
| Dec 13, 2025 | 19.03% (0.19030) | 95.10th | v4 (v2025.03.14) |
| Nov 21, 2025 | 14.42% (0.14416) | 94.16th | v4 (v2025.03.14) |
| Nov 18, 2025 | 50.42% (0.50425) | 97.71th | v4 (v2025.03.14) |
| Nov 17, 2025 | 14.42% (0.14416) | 94.15th | v4 (v2025.03.14) |
| Aug 10, 2025 | 8.14% (0.08143) | 91.79th | v4 (v2025.03.14) |
| Aug 1, 2025 | 10.25% (0.10249) | 92.89th | v4 (v2025.03.14) |
| Jul 13, 2025 | 14.42% (0.14416) | 94.10th | v4 (v2025.03.14) |
| Mar 30, 2025 | 8.14% (0.08143) | 91.36th | v4 (v2025.03.14) |
| Mar 29, 2025 | 5.51% (0.05507) | 83.33th | v4 (v2025.03.14) |
| Mar 17, 2025 | 8.14% (0.08143) | 91.55th | v4 (v2025.03.14) |
| Dec 17, 2024 | 35.43% (0.35432) | 97.15th | v3 (v2023.03.01) |
| Jun 9, 2024 | 11.21% (0.11208) | 95.19th | v3 (v2023.03.01) |
| May 1, 2024 | 10.97% (0.10967) | 95.06th | v3 (v2023.03.01) |
| Oct 24, 2023 | 9.90% (0.09899) | 94.19th | v3 (v2023.03.01) |
| Sep 6, 2023 | 7.24% (0.07241) | 93.19th | v3 (v2023.03.01) |
| Jul 28, 2023 | 9.90% (0.09899) | 94.04th | v3 (v2023.03.01) |
| Jul 8, 2023 | 14.69% (0.14693) | 95.02th | v3 (v2023.03.01) |
| Jun 15, 2023 | 16.68% (0.16675) | 95.26th | v3 (v2023.03.01) |
| Mar 7, 2023 | 11.61% (0.11610) | 94.33th | v3 (v2023.03.01) |
| Mar 6, 2023 | 47.64% (0.47641) | 98.58th | v2 (v2022.01.01) |
| Mar 17, 2022 | 47.64% (0.47641) | 98.12th | v2 (v2022.01.01) |
| Feb 4, 2022 | 18.33% (0.18327) | 93.57th | v2 (v2022.01.01) |
| Feb 3, 2022 | 15.16% (0.15163) | 90.00th | v1 |
| Jan 6, 2022 | 15.16% (0.15163) | 89.89th | v1 |
| Sep 1, 2021 | 15.16% (0.15163) | 97.22th | v1 |
| Apr 14, 2021 | 15.16% (0.15163) | 0.00th | v1 |
Weaknesses (2)
References (15)
- http://packetstormsecurity.com/files/146631/Slackware-Security-Advisory-ntp-Updates.html x_refsource_MISCThird Party AdvisoryVDB Entry
- http://support.ntp.org/bin/view/Main/NtpBug3412 x_refsource_CONFIRMMitigationVendor Advisory
- http://www.securityfocus.com/archive/1/541824/100/0/threaded mailing-listx_refsource_BUGTRAQThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/103191 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-7182 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1550208 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2018-7182
- https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc vendor-advisoryx_refsource_FREEBSDPatchThird Party Advisory
- https://security.gentoo.org/glsa/201805-12 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://security.netapp.com/advisory/ntap-20180626-0001/ x_refsource_CONFIRMThird Party Advisory
- https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us x_refsource_CONFIRM
- https://usn.ubuntu.com/3707-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-7182
- https://www.exploit-db.com/exploits/45846/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
- https://www.synology.com/support/security/Synology_SA_18_13 x_refsource_CONFIRMThird Party Advisory
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Mar 6, 2018
Updated Aug 5, 2024
Reserved Feb 16, 2018
Link CVE-2018-7182
CISA Vulnrichment
Updated n/a