CVE-2021-45951 - Vulnerability Details - OpenCVE

Description

Dnsmasq 2.86 has a heap-based buffer overflow in check_bad_address (called from check_for_bogus_wildcard and FuzzCheckForBogusWildcard). NOTE: the vendor's position is that CVE-2021-45951 through CVE-2021-45957 "do not represent real vulnerabilities, to the best of our knowledge.

Published: 2021-12-31

Score: 9.8 Critical

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

No analysis available yet.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

cpe:2.3:a:thekelleys:dnsmasq:2.86:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No remediation available yet.

Tracking

Sign in to view the affected projects.

Advisories

No advisories yet.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

The EPSS score is 0.00035.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=35868
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/dnsmasq/OSV-2021-924.yaml
https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016162.html
https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016164.html
https://nvd.nist.gov/vuln/detail/CVE-2021-45951
https://www.cve.org/CVERecord?id=CVE-2021-45951

History

Thu, 10 Oct 2024 02:15:00 +0000

Type	Values Removed	Values Added
Metrics	threat_severity `None`	threat_severity `Low`

Subscriptions

Thekelleys Dnsmasq

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-12-31T23:54:10.000Z

Updated: 2024-08-04T04:54:31.071Z

Reserved: 2021-12-31T00:00:00.000Z

Link: CVE-2021-45951

Vulnrichment

No data.

NVD

Status : Modified

Published: 2022-01-01T00:15:08.507

Modified: 2024-11-21T06:33:20.747

Link: CVE-2021-45951

Redhat

Severity : Low

Publid Date: 2022-01-01T00:00:00Z

Links: CVE-2021-45951 - Bugzilla

OpenCVE Enrichment

No data.

Weaknesses

CWE-787

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