MEDIUM
net-snmp: NULL pointer exception in _set_key in agent/helpers/table_container.c resulting in a denial of service
Published Oct 8, 2018
6.5
MEDIUMCVSS 3.0
EPSS 17.50%
Description
_set_key in agent/helpers/table_container.c in Net-SNMP before 5.8 has a NULL Pointer Exception bug that can be used by an authenticated attacker to remotely cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.
Affected products
No data.
Configuration 2
- 9.0
Configuration 3
OR
- 12.04
- 14.04
- 16.04
- 18.04
- 18.10
Configuration 4
OR
- n/a
- n/a
- n/a
- n/a
- ≥ 11.0 · ≤ 11.5
- n/a
Configuration 5
OR
- ≤ 7.1.22
- ≥ 7.1.23 · ≤ 8.0.15
- ≥ 8.0.16 · ≤ 8.1.6
No data.
Red Hat Enterprise Linux 5
net-snmp
Not affected
Red Hat Enterprise Linux 6
net-snmp
Not affected
Red Hat Enterprise Linux 7
net-snmp
Not affected
Red Hat Enterprise Linux 8
net-snmp
Not affected
Red Hat Virtualization 4
net-snmp
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | net-snmp | Not affected | n/a |
| Red Hat Enterprise Linux 6 | net-snmp | Not affected | n/a |
| Red Hat Enterprise Linux 7 | net-snmp | Not affected | n/a |
| Red Hat Enterprise Linux 8 | net-snmp | Not affected | n/a |
| Red Hat Virtualization 4 | net-snmp | Not affected | 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.
6.5 MEDIUM NVD
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
4.0 MEDIUM NVD
AV:N/AC:L/Au:S/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication Single
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.
17.50% 0.17504
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
EPSS probability 0.17504
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 (43 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 17.50% (0.17504) | 97.05th | v5 (v2026.06.15) |
| Sep 22, 2026 | 17.19% (0.17189) | 96.95th | v5 (v2026.06.15) |
| Sep 21, 2026 | 13.70% (0.13699) | 96.38th | v5 (v2026.06.15) |
| Sep 6, 2026 | 17.19% (0.17189) | 96.88th | v5 (v2026.06.15) |
| Sep 5, 2026 | 13.70% (0.13699) | 96.30th | v5 (v2026.06.15) |
| Aug 30, 2026 | 17.19% (0.17189) | 96.87th | v5 (v2026.06.15) |
| Aug 28, 2026 | 13.70% (0.13699) | 96.27th | v5 (v2026.06.15) |
| Aug 24, 2026 | 17.19% (0.17189) | 96.85th | v5 (v2026.06.15) |
| Aug 23, 2026 | 13.70% (0.13699) | 96.26th | v5 (v2026.06.15) |
| Jun 15, 2026 | 17.05% (0.17055) | 96.67th | v5 (v2026.06.15) |
| Mar 26, 2026 | 7.36% (0.07356) | 91.66th | v4 (v2025.03.14) |
| Feb 15, 2026 | 8.80% (0.08800) | 92.33th | v4 (v2025.03.14) |
| Dec 28, 2025 | 11.46% (0.11463) | 93.37th | v4 (v2025.03.14) |
| Dec 27, 2025 | 7.94% (0.07939) | 91.79th | v4 (v2025.03.14) |
| Nov 25, 2025 | 11.46% (0.11463) | 93.32th | v4 (v2025.03.14) |
| Nov 21, 2025 | 4.85% (0.04853) | 89.07th | v4 (v2025.03.14) |
| Nov 18, 2025 | 15.31% (0.15312) | 94.06th | v4 (v2025.03.14) |
| Oct 28, 2025 | 4.29% (0.04294) | 88.33th | v4 (v2025.03.14) |
| Oct 27, 2025 | 2.88% (0.02879) | 85.81th | v4 (v2025.03.14) |
| Oct 1, 2025 | 4.29% (0.04294) | 88.43th | v4 (v2025.03.14) |
| Aug 17, 2025 | 2.11% (0.02106) | 83.37th | v4 (v2025.03.14) |
| Jul 30, 2025 | 3.26% (0.03263) | 86.66th | v4 (v2025.03.14) |
| Mar 30, 2025 | 4.37% (0.04374) | 87.90th | v4 (v2025.03.14) |
| Mar 29, 2025 | 11.95% (0.11952) | 89.57th | v4 (v2025.03.14) |
| Mar 17, 2025 | 4.17% (0.04174) | 87.93th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.48% (0.00479) | 76.63th | v3 (v2023.03.01) |
| May 27, 2024 | 0.43% (0.00426) | 74.29th | v3 (v2023.03.01) |
| May 3, 2024 | 0.36% (0.00356) | 71.92th | v3 (v2023.03.01) |
| Feb 29, 2024 | 0.41% (0.00410) | 73.31th | v3 (v2023.03.01) |
| Feb 28, 2024 | 0.58% (0.00577) | 77.43th | v3 (v2023.03.01) |
| Oct 2, 2023 | 0.58% (0.00577) | 75.42th | v3 (v2023.03.01) |
| Sep 17, 2023 | 0.50% (0.00499) | 73.49th | v3 (v2023.03.01) |
| Jul 8, 2023 | 0.38% (0.00376) | 69.04th | v3 (v2023.03.01) |
| Mar 21, 2023 | 0.36% (0.00365) | 68.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.41% (0.00409) | 69.79th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.28% (0.01282) | 68.34th | v2 (v2022.01.01) |
| Feb 22, 2023 | 1.28% (0.01282) | 68.05th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.28% (0.01282) | 65.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.28% (0.01282) | 41.72th | v2 (v2022.01.01) |
| Feb 3, 2022 | 13.34% (0.13340) | 89.09th | v1 |
| Jan 6, 2022 | 13.34% (0.13340) | 88.96th | v1 |
| Sep 1, 2021 | 13.34% (0.13340) | 96.02th | v1 |
| Apr 14, 2021 | 13.34% (0.13340) | 0.00th | v1 |
Weaknesses (1)
References (16)
- http://www.securityfocus.com/bid/106265 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2018-18065 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1637570 Issue Tracking
- https://cert-portal.siemens.com/productcert/pdf/ssa-978220.pdf x_refsource_CONFIRM
- https://dumpco.re/blog/net-snmp-5.7.3-remote-dos x_refsource_MISCExploitPatchThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-18065
- https://security.netapp.com/advisory/ntap-20181107-0001/ x_refsource_CONFIRMThird Party Advisory
- https://security.paloaltonetworks.com/CVE-2018-18065 x_refsource_CONFIRM
- https://sourceforge.net/p/net-snmp/code/ci/7ffb8e25a0db851953155de91f0170e9bf8c457d/ x_refsource_MISCPatchThird Party Advisory
- https://usn.ubuntu.com/3792-1/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3792-2/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://usn.ubuntu.com/3792-3/ vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-18065
- https://www.debian.org/security/2018/dsa-4314 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- https://www.exploit-db.com/exploits/45547/ exploitx_refsource_EXPLOIT-DBPatchThird Party AdvisoryVDB Entry
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html x_refsource_MISC
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Oct 8, 2018
Updated Aug 5, 2024
Reserved Oct 8, 2018
Link CVE-2018-18065
CISA Vulnrichment
Updated n/a