ubuntu-cve-2018-18066
Vulnerability from osv_ubuntu
Published
2018-10-08 18:29
Modified
2025-07-16 04:54
Summary
Details
snmp_oid_compare in snmplib/snmp_api.c in Net-SNMP before 5.8 has a NULL Pointer Exception bug that can be used by an unauthenticated attacker to remotely cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.
Severity
7.5 (High)
7.5 (High)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libsnmp-base",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
},
{
"binary_name": "libsnmp-dev",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
},
{
"binary_name": "libsnmp-dev-dbgsym",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
},
{
"binary_name": "libsnmp-perl",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
},
{
"binary_name": "libsnmp-perl-dbgsym",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
},
{
"binary_name": "libsnmp30",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
},
{
"binary_name": "libsnmp30-dbg",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
},
{
"binary_name": "libsnmp30-dbgsym",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
},
{
"binary_name": "python-netsnmp",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
},
{
"binary_name": "python-netsnmp-dbgsym",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
},
{
"binary_name": "snmp",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
},
{
"binary_name": "snmp-dbgsym",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
},
{
"binary_name": "snmpd",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
},
{
"binary_name": "snmpd-dbgsym",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
},
{
"binary_name": "tkmib",
"binary_version": "5.7.2~dfsg-8.1ubuntu3.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:14.04:LTS",
"name": "net-snmp",
"purl": "pkg:deb/ubuntu/net-snmp@5.7.2~dfsg-8.1ubuntu3.1?arch=source\u0026distro=trusty"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.7.2~dfsg-8.1ubuntu3.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.7.2~dfsg-8ubuntu1",
"5.7.2~dfsg-8ubuntu2",
"5.7.2~dfsg-8.1ubuntu1",
"5.7.2~dfsg-8.1ubuntu2",
"5.7.2~dfsg-8.1ubuntu3"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libsnmp-base",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
},
{
"binary_name": "libsnmp-dev",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
},
{
"binary_name": "libsnmp-perl",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
},
{
"binary_name": "libsnmp-perl-dbgsym",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
},
{
"binary_name": "libsnmp30",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
},
{
"binary_name": "libsnmp30-dbg",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
},
{
"binary_name": "python-netsnmp",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
},
{
"binary_name": "python-netsnmp-dbgsym",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
},
{
"binary_name": "snmp",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
},
{
"binary_name": "snmp-dbgsym",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
},
{
"binary_name": "snmpd",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
},
{
"binary_name": "snmpd-dbgsym",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
},
{
"binary_name": "snmptrapd",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
},
{
"binary_name": "snmptrapd-dbgsym",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
},
{
"binary_name": "tkmib",
"binary_version": "5.7.3+dfsg-1.8ubuntu3"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "net-snmp",
"purl": "pkg:deb/ubuntu/net-snmp@5.7.3+dfsg-1.8ubuntu3?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.7.3+dfsg-1.8ubuntu3"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.7.3+dfsg-1.7ubuntu1",
"5.7.3+dfsg-1.8ubuntu1",
"5.7.3+dfsg-1.8ubuntu2"
]
}
],
"aliases": [],
"details": "snmp_oid_compare in snmplib/snmp_api.c in Net-SNMP before 5.8 has a NULL Pointer Exception bug that can be used by an unauthenticated attacker to remotely cause the instance to crash via a crafted UDP packet, resulting in Denial of Service.",
"id": "UBUNTU-CVE-2018-18066",
"modified": "2025-07-16T04:54:03Z",
"published": "2018-10-08T18:29:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2018-18066"
},
{
"type": "REPORT",
"url": "https://dumpco.re/blog/net-snmp-5.7.3-remote-dos"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2018-18066"
}
],
"related": [],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2018-18066"
],
"withdrawn": "2025-07-18T16:44:47Z"
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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