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cveMitreCVE-2021-45951
HistoryJan 01, 2022 - 12:15 a.m.

CVE-2021-45951

2022-01-0100:15:08
CWE-787
mitre
web.nvd.nist.gov
168
cve-2021-45951
dnsmasq
buffer overflow
nvd
security vulnerability

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.4

Confidence

High

EPSS

0.002

Percentile

57.6%

JSON

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.

Affected configurations

Nvd
Node
thekelleysdnsmasqMatch2.86
VendorProductVersionCPE
thekelleysdnsmasq2.86cpe:2.3:a:thekelleys:dnsmasq:2.86:*:*:*:*:*:*:*

Related

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avleonov 1
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cbl_mariner
cbl_mariner
CVE-2021-45951 affecting package dnsmasq for versions less than 2.89-1
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CVE-2021-45957 affecting package dnsmasq for versions less than 2.89-2
2023-04-16 00:48:11
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CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.4

Confidence

High

EPSS

0.002

Percentile

57.6%

JSON
Related for CVE-2021-45951
cvelist7ubuntucve7alpinelinux7nvd7prion7debiancve7cve6redhatcve6vulnrichment3cbl_mariner2nessus1openvas1avleonov1