gsd-2018-5733
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
A malicious client which is allowed to send very large amounts of traffic (billions of packets) to a DHCP server can eventually overflow a 32-bit reference counter, potentially causing dhcpd to crash. Affects ISC DHCP 4.1.0 -> 4.1-ESV-R15, 4.2.0 -> 4.2.8, 4.3.0 -> 4.3.6, 4.4.0.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2018-5733",
"description": "A malicious client which is allowed to send very large amounts of traffic (billions of packets) to a DHCP server can eventually overflow a 32-bit reference counter, potentially causing dhcpd to crash. Affects ISC DHCP 4.1.0 -\u003e 4.1-ESV-R15, 4.2.0 -\u003e 4.2.8, 4.3.0 -\u003e 4.3.6, 4.4.0.",
"id": "GSD-2018-5733",
"references": [
"https://www.suse.com/security/cve/CVE-2018-5733.html",
"https://www.debian.org/security/2018/dsa-4133",
"https://access.redhat.com/errata/RHSA-2018:0483",
"https://access.redhat.com/errata/RHSA-2018:0469",
"https://ubuntu.com/security/CVE-2018-5733",
"https://advisories.mageia.org/CVE-2018-5733.html",
"https://security.archlinux.org/CVE-2018-5733",
"https://alas.aws.amazon.com/cve/html/CVE-2018-5733.html",
"https://linux.oracle.com/cve/CVE-2018-5733.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2018-5733"
],
"details": "A malicious client which is allowed to send very large amounts of traffic (billions of packets) to a DHCP server can eventually overflow a 32-bit reference counter, potentially causing dhcpd to crash. Affects ISC DHCP 4.1.0 -\u003e 4.1-ESV-R15, 4.2.0 -\u003e 4.2.8, 4.3.0 -\u003e 4.3.6, 4.4.0.",
"id": "GSD-2018-5733",
"modified": "2023-12-13T01:22:39.944349Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
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"ASSIGNER": "security-officer@isc.org",
"DATE_PUBLIC": "2018-02-28T00:00:00.000Z",
"ID": "CVE-2018-5733",
"STATE": "PUBLIC",
"TITLE": "A malicious client can overflow a reference counter in ISC dhcpd"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "ISC DHCP",
"version": {
"version_data": [
{
"version_name": "ISC DHCP",
"version_value": "4.1.0 -\u003e 4.1-ESV-R15, 4.2.0 -\u003e 4.2.8, 4.3.0 -\u003e 4.3.6, 4.4.0"
}
]
}
}
]
},
"vendor_name": "ISC"
}
]
}
},
"credit": [
{
"lang": "eng",
"value": "ISC would like to thank Felix Wilhelm, Google Security Team, for reporting this vulnerability."
}
],
"data_format": "MITRE",
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"data_version": "4.0",
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}
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"impact": {
"cvss": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 5.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.0"
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},
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"value": "Successful exploitation of this vulnerability may exhaust the memory available to dhcpd and/or cause it to crash, resulting in a denial of service to clients."
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"refsource": "MLIST",
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}
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},
"solution": [
{
"lang": "eng",
"value": "Upgrade to the patched release most closely related to your current version of DHCP.\n\n DHCP 4.1-ESV-R15-P1\n DHCP 4.3.6-P1\n DHCP 4.4.1"
}
],
"source": {
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}
},
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"impact": {
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"authentication": "NONE",
"availabilityImpact": "PARTIAL",
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"exploitabilityScore": 10.0,
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"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
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}
},
"lastModifiedDate": "2020-01-09T21:08Z",
"publishedDate": "2019-01-16T20:29Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.