Failure to properly clean up closed OMAPI connections can exhaust available sockets
Published Jan 16, 2019
7.5
HIGHCVSS 3.1
EPSS 72.72%
Description
A vulnerability stemming from failure to properly clean up closed OMAPI connections can lead to exhaustion of the pool of socket descriptors available to the DHCP server. Affects ISC DHCP 4.1.0 to 4.1-ESV-R15, 4.2.0 to 4.2.8, 4.3.0 to 4.3.6. Older versions may also be affected but are well beyond their end-of-life (EOL). Releases prior to 4.1.0 have not been tested.
Affected products
-
- Version ISC DHCP 4.1.0 to 4.1-ESV-R15, 4.2.0 to 4.2.8, 4.3.0 to 4.3.6. Older versions may also be affected but are well beyond their end-of-life (EOL). Releases prior to 4.1.0 have not been tested.StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
Configuration 1
- ≥ 4.2.0 · ≤ 4.2.8
- ≥ 4.3.0 · ≤ 4.3.6
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1-esv
- 4.1.0
Configuration 2
- 7.0
- 7.0
- 7.4
- 7.6
- 7.4
- 7.5
- 7.6
- 7.4
- 7.6
- 7.0
Configuration 3
- 14.04
- 16.04
- 17.10
Configuration 4
- 8.0
- 9.0
No data.
Red Hat Enterprise Linux 7
dhcp-12:4.2.5-58.el7_4.1
Fixed · RHSA-2018:0158
Red Hat Enterprise Linux 5
dhcp
Not affected
Red Hat Enterprise Linux 6
dhcp
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 7 | dhcp-12:4.2.5-58.el7_4.1 | Fixed | RHSA-2018:0158 |
| Red Hat Enterprise Linux 5 | dhcp | Not affected | n/a |
| Red Hat Enterprise Linux 6 | dhcp | Not affected | n/a |
No package ranges for this CVE.
Remediation
Vendor solution
The recommended remedy is to disallow access to the OMAPI control port from unauthorized clients (in accordance with best practices for server operation).
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:L
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
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 (33 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 72.72% (0.72724) | 99.43th | v5 (v2026.06.15) |
| Jun 15, 2026 | 72.72% (0.72724) | 99.37th | v5 (v2026.06.15) |
| May 9, 2026 | 11.78% (0.11782) | 93.76th | v4 (v2025.03.14) |
| Dec 28, 2025 | 17.59% (0.17594) | 94.87th | v4 (v2025.03.14) |
| Dec 27, 2025 | 22.18% (0.22179) | 95.63th | v4 (v2025.03.14) |
| Oct 28, 2025 | 18.41% (0.18410) | 94.94th | v4 (v2025.03.14) |
| Oct 27, 2025 | 23.13% (0.23134) | 95.69th | v4 (v2025.03.14) |
| Oct 1, 2025 | 18.41% (0.18410) | 95.03th | v4 (v2025.03.14) |
| Sep 8, 2025 | 23.13% (0.23134) | 95.72th | v4 (v2025.03.14) |
| Aug 30, 2025 | 15.93% (0.15928) | 94.50th | v4 (v2025.03.14) |
| Aug 27, 2025 | 12.94% (0.12942) | 93.79th | v4 (v2025.03.14) |
| Jun 1, 2025 | 23.13% (0.23134) | 95.64th | v4 (v2025.03.14) |
| May 25, 2025 | 10.88% (0.10885) | 93.01th | v4 (v2025.03.14) |
| Apr 21, 2025 | 8.32% (0.08319) | 91.77th | v4 (v2025.03.14) |
| Mar 30, 2025 | 10.88% (0.10885) | 92.74th | v4 (v2025.03.14) |
| Mar 29, 2025 | 19.35% (0.19349) | 92.43th | v4 (v2025.03.14) |
| Mar 17, 2025 | 10.88% (0.10885) | 92.85th | v4 (v2025.03.14) |
| Mar 13, 2025 | 10.54% (0.10541) | 95.17th | v3 (v2023.03.01) |
| Dec 26, 2024 | 12.78% (0.12775) | 95.45th | v3 (v2023.03.01) |
| Dec 17, 2024 | 10.85% (0.10855) | 95.08th | v3 (v2023.03.01) |
| Feb 8, 2024 | 14.39% (0.14388) | 95.52th | v3 (v2023.03.01) |
| Jan 10, 2024 | 37.75% (0.37748) | 96.86th | v3 (v2023.03.01) |
| Jun 14, 2023 | 41.57% (0.41569) | 96.78th | v3 (v2023.03.01) |
| May 8, 2023 | 42.67% (0.42666) | 96.76th | v3 (v2023.03.01) |
| Mar 7, 2023 | 48.72% (0.48720) | 96.87th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.77% (0.01769) | 76.59th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.77% (0.01769) | 76.54th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.77% (0.01769) | 74.48th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.77% (0.01769) | 53.72th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.45% (0.01454) | 32.67th | v1 |
| Jan 6, 2022 | 1.45% (0.01454) | 31.96th | v1 |
| Sep 1, 2021 | 1.45% (0.01454) | 71.88th | v1 |
| Apr 14, 2021 | 1.45% (0.01454) | 0.00th | v1 |
References (11)
- http://www.securityfocus.com/bid/102726 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1040194 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- https://access.redhat.com/errata/RHSA-2018:0158 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2017-3144 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1522918 Issue Tracking
- https://kb.isc.org/article/AA-01541
- https://kb.isc.org/docs/aa-01541 x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2017-3144
- https://usn.ubuntu.com/3586-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2017-3144
- https://www.debian.org/security/2018/dsa-4133 vendor-advisoryx_refsource_DEBIANThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.securityfocus.com/bid/102726 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.securitytracker.com/id/1040194 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| https://access.redhat.com/errata/RHSA-2018:0158 | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| https://access.redhat.com/security/cve/CVE-2017-3144 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1522918 | Issue Tracking | |
| https://kb.isc.org/article/AA-01541 | ||
| https://kb.isc.org/docs/aa-01541 | x_refsource_CONFIRMVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2017-3144 | ||
| https://usn.ubuntu.com/3586-1/ | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2017-3144 | ||
| https://www.debian.org/security/2018/dsa-4133 | vendor-advisoryx_refsource_DEBIANThird Party Advisory |
Change history (0)
No recorded changes yet.