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ubuntucveUbuntu.comUB:CVE-2021-45951
HistoryJan 01, 2022 - 12:00 a.m.

CVE-2021-45951

2022-01-0100:00:00
ubuntu.com
ubuntu.com
11
dnsmasq 2.86
heap-based buffer overflow
check_bad_address
disputed
vulnerabilities

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

EPSS

0.002

Percentile

55.2%

JSON

DISPUTED 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.”

Notes

Author Note
mdeslaur vendor has disputed this CVE, marking as not-affected

Related

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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

EPSS

0.002

Percentile

55.2%

JSON
Related for UB:CVE-2021-45951
cvelist7cve7alpinelinux7nvd7ubuntucve6redhatcve6debiancve7prion7vulnrichment3cbl_mariner2nessus1openvas1avleonov1