GSD-2021-40085
Vulnerability from gsd - Updated: 2023-12-13 01:23Details
An issue was discovered in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1. Authenticated attackers can reconfigure dnsmasq via a crafted extra_dhcp_opts value.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-40085",
"description": "An issue was discovered in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1. Authenticated attackers can reconfigure dnsmasq via a crafted extra_dhcp_opts value.",
"id": "GSD-2021-40085",
"references": [
"https://www.suse.com/security/cve/CVE-2021-40085.html",
"https://www.debian.org/security/2021/dsa-4983",
"https://access.redhat.com/errata/RHSA-2021:3503",
"https://access.redhat.com/errata/RHSA-2021:3502",
"https://access.redhat.com/errata/RHSA-2021:3488",
"https://access.redhat.com/errata/RHSA-2021:3481"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-40085"
],
"details": "An issue was discovered in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1. Authenticated attackers can reconfigure dnsmasq via a crafted extra_dhcp_opts value.",
"id": "GSD-2021-40085",
"modified": "2023-12-13T01:23:25.848678Z",
"schema_version": "1.4.0"
}
},
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{
"name": "[oss-security] 20210831 [OSSA-2021-005] Neutron: Arbitrary dnsmasq reconfiguration via extra_dhcp_opts (CVE-2021-40085)",
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"url": "https://www.debian.org/security/2021/dsa-4983"
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},
"gitlab.com": {
"advisories": [
{
"affected_range": "\u003c16.4.1||\u003e=17.0.0,\u003c17.2.1||\u003e=18.0.0,\u003c18.1.1",
"affected_versions": "All versions before 16.4.1, all versions starting from 17.0.0 before 17.2.1, all versions starting from 18.0.0 before 18.1.1",
"cvss_v2": "AV:N/AC:L/Au:S/C:N/I:P/A:N",
"cvss_v3": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"cwe_ids": [
"CWE-1035",
"CWE-937"
],
"date": "2022-06-13",
"description": "An issue was discovered in OpenStack Neutron Authenticated attackers can reconfigure dnsmasq via a crafted extra_dhcp_opts value.",
"fixed_versions": [
"16.4.1",
"17.2.1",
"18.1.1"
],
"identifier": "CVE-2021-40085",
"identifiers": [
"CVE-2021-40085"
],
"not_impacted": "All versions starting from 16.4.1 before 17.0.0, all versions starting from 17.2.1 before 18.0.0, all versions starting from 18.1.1",
"package_slug": "pypi/neutron",
"pubdate": "2021-08-31",
"solution": "Upgrade to versions 16.4.1, 17.2.1, 18.1.1 or above.",
"title": "Security Misconfiguration",
"urls": [
"https://nvd.nist.gov/vuln/detail/CVE-2021-40085",
"https://security.openstack.org/ossa/OSSA-2021-005.html"
],
"uuid": "e0d50c03-2e10-463c-9f93-63084864d6c9"
}
]
},
"nvd.nist.gov": {
"configurations": {
"CVE_data_version": "4.0",
"nodes": [
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"references": {
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},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "NONE",
"baseScore": 4.0,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:L/Au:S/C:N/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
"version": "3.1"
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"exploitabilityScore": 2.8,
"impactScore": 3.6
}
},
"lastModifiedDate": "2022-06-13T19:56Z",
"publishedDate": "2021-08-31T18:15Z"
}
}
}
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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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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