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CVE-2021-45956

Published: 1 January 2022

** DISPUTED ** Dnsmasq 2.86 has a heap-based buffer overflow in print_mac (called from log_packet and dhcp_reply). 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

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

Priority

Medium

Cvss 3 Severity Score

9.8

Score breakdown

Status

Package Release Status
dnsmasq
Launchpad, Ubuntu, Debian
bionic Not vulnerable

focal Not vulnerable

hirsute Ignored
(end of life)
impish Not vulnerable

jammy Not vulnerable

trusty Not vulnerable

xenial Not vulnerable

upstream Needs triage

Severity score breakdown

Parameter Value
Base score 9.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H