CVE-2021-40085 (GCVE-0-2021-40085)

Vulnerability from cvelistv5 – Published: 2021-08-31 17:32 – Updated: 2024-08-04 02:27
VLAI
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)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

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      "cve": "CVE-2021-40085",
      "id": "CVE-2021-40085",
      "initial_release_date": "2021-08-31T00:00:00+00:00",
      "product_status:fixed": "56",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "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"
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      "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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}



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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.


Detection rules are retrieved from Rulezet.