CVE-2021-40085 (GCVE-0-2021-40085)
Vulnerability from cvelistv5 – Published: 2021-08-31 17:32 – Updated: 2024-08-04 02:27
VLAI
EPSS
VEX
Summary
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.
Severity
6.5 (Medium)
CWE
- n/a
Assigner
References
6 references
| URL | Tags |
|---|---|
| https://launchpad.net/bugs/1939733 | x_refsource_MISC |
| http://www.openwall.com/lists/oss-security/2021/08/31/2 | mailing-listx_refsource_MLIST |
| https://security.openstack.org/ossa/OSSA-2021-005.html | x_refsource_MISC |
| https://lists.debian.org/debian-lts-announce/2021… | mailing-listx_refsource_MLIST |
| https://www.debian.org/security/2021/dsa-4983 | vendor-advisoryx_refsource_DEBIAN |
| https://lists.debian.org/debian-lts-announce/2022… | mailing-listx_refsource_MLIST |
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"status": "final",
"title": "openstack-neutron: arbitrary dnsmasq reconfiguration via extra_dhcp_opts",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-40085.json",
"version": "3"
},
"suse_vex": {
"aggregate_severity": "important",
"current_release_date": "2025-04-25T04:31:25Z",
"cve": "CVE-2021-40085",
"id": "CVE-2021-40085",
"initial_release_date": "2023-02-15T03:38:00Z",
"product_status:recommended": "135",
"source": "SUSE CSAF VEX",
"status": "interim",
"title": "SUSE CVE CVE-2021-40085",
"url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-40085.json",
"version": "7"
}
}
}
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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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