CVE-2018-18065

Exp

_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.

Published: 2018-10-08 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2018-18065 is rated High Exploit Risk (73.1/100): CVSS Medium severity, with high exploitation likelihood (EPSS 7.34%, 92th percentile). 3 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-18065

EDB-ID Source Kind Published Link
45547 exploit_db edb 2018-10-08 Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-18065

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-04-29 7.36% 7.34% -0.02%
2 2026-03-26 8.80% 7.36% -1.44%
3 2026-02-15 — 8.80% —

Full EPSS history (29 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-18065

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
6.5 3.0 MEDIUM
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.
 2.8 3.6 [email protected]
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2018-18065

OS Trackers for CVE-2018-18065

vendor priority summary link
debian not yet assigned CVE-2018-18065 not yet assigned priority: Debian including 1 source packages (net-snmp), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. https://security-tracker.debian.org/tracker/CVE-2018-18065
redhat medium — https://access.redhat.com/security/cve/CVE-2018-18065
suse high CVE-2018-18065 severity important: SUSE including 320 source package names (2.0.19.2.2.10:libsnmp30-5.7.3-10.9.1, amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, …), 583 product×package rows across 88 product lines (Container ses/7.1/ceph/keepalived, HPE Helion OpenStack 8, … (88 product lines)): Fixed 290, Known Affected 231, Known Not Affected 62. https://www.suse.com/security/cve/CVE-2018-18065/
ubuntu medium CVE-2018-18065 medium priority: Ubuntu including 1 source packages (net-snmp), 5 status rows across 5 suites (bionic, cosmic, trusty, upstream, xenial): released 5. https://ubuntu.com/security/CVE-2018-18065

Affected software / configurations for CVE-2018-18065

Vendor Product Version Raw CPE
net-snmp net-snmp < 5.8 cpe:2.3:a:net-snmp:net-snmp:*:*:*:*:*:*:*:*
debian debian_linux 9.0 cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 16.04 cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 18.04 cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
canonical ubuntu_linux 18.10 cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*
netapp cloud_backup — cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:*
netapp hyper_converged_infrastructure — cpe:2.3:a:netapp:hyper_converged_infrastructure:-:*:*:*:*:*:*:*
netapp storagegrid_webscale — cpe:2.3:a:netapp:storagegrid_webscale:-:*:*:*:*:*:*:*
netapp data_ontap — cpe:2.3:o:netapp:data_ontap:-:*:*:*:*:*:*:*
netapp e-series_santricity_os_controller >= 11.0, <= 11.5 cpe:2.3:o:netapp:e-series_santricity_os_controller:*:*:*:*:*:*:*:*
netapp solidfire_element_os — cpe:2.3:o:netapp:solidfire_element_os:-:*:*:*:*:*:*:*
paloaltonetworks pan-os <= 7.1.22 cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*
paloaltonetworks pan-os >= 7.1.23, <= 8.0.15 cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*
paloaltonetworks pan-os >= 8.0.16, <= 8.1.6 cpe:2.3:o:paloaltonetworks:pan-os:*:*:*:*:*:*:*:*

References for CVE-2018-18065

URL Tags
http://www.securityfocus.com/bid/106265 Third Party Advisory VDB Entry
https://cert-portal.siemens.com/productcert/pdf/ssa-978220.pdf
https://dumpco.re/blog/net-snmp-5.7.3-remote-dos Exploit Patch Third Party Advisory
https://security.netapp.com/advisory/ntap-20181107-0001/ Third Party Advisory
https://security.paloaltonetworks.com/CVE-2018-18065
https://sourceforge.net/p/net-snmp/code/ci/7ffb8e25a0db851953155de91f0170e9bf8c457d/ Patch Third Party Advisory
https://usn.ubuntu.com/3792-1/ Third Party Advisory
https://usn.ubuntu.com/3792-2/ Third Party Advisory
https://usn.ubuntu.com/3792-3/ Third Party Advisory
https://www.debian.org/security/2018/dsa-4314 Third Party Advisory
https://www.exploit-db.com/exploits/45547/ Exploit Patch Third Party Advisory VDB Entry
https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
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