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CVE-2022-2795

Published: 21 September 2022

By flooding the target resolver with queries exploiting this flaw an attacker can significantly impair the resolver's performance, effectively denying legitimate clients access to the DNS resolution service.

Notes

AuthorNote
alexmurray
As of isc-dhcp-4.4.3-1, isc-dhcp vendors bind9 libs

Priority

Medium

Cvss 3 Severity Score

5.3

Score breakdown

Status

Package Release Status
isc-dhcp
Launchpad, Ubuntu, Debian
kinetic Ignored
(end of life, was needed)
lunar Needed

bionic Not vulnerable
(code not present)
focal Not vulnerable
(code not present)
jammy Not vulnerable
(code not present)
trusty Not vulnerable
(code not present)
upstream Needs triage

xenial Not vulnerable
(code not present)
mantic Needed

bind9
Launchpad, Ubuntu, Debian
kinetic
Released (1:9.18.4-2ubuntu2)
lunar
Released (1:9.18.4-2ubuntu2)
upstream Needs triage

xenial
Released (1:9.10.3.dfsg.P4-8ubuntu1.19+esm3)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
bionic
Released (1:9.11.3+dfsg-1ubuntu1.18)
focal
Released (1:9.16.1-0ubuntu2.11)
jammy
Released (1:9.18.1-1ubuntu1.2)
trusty
Released (1:9.9.5.dfsg-3ubuntu0.19+esm7)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only)
mantic
Released (1:9.18.4-2ubuntu2)

Severity score breakdown

Parameter Value
Base score 5.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact Low
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L