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CVE-2022-2906

Published: 21 September 2022

An attacker can leverage this flaw to gradually erode available memory to the point where named crashes for lack of resources. Upon restart the attacker would have to begin again, but nevertheless there is the potential to deny service.

Notes

AuthorNote
alexmurray
As of isc-dhcp-4.4.3-1, isc-dhcp vendors bind9 libs
mdeslaur
affects 9.18+

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
bind9
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(1:9.11.3+dfsg-1ubuntu1.17)
focal Not vulnerable
(1:9.16.1-0ubuntu2.10)
jammy
Released (1:9.18.1-1ubuntu1.2)
kinetic
Released (1:9.18.4-2ubuntu2)
trusty Not vulnerable

upstream Needs triage

xenial Not vulnerable

isc-dhcp
Launchpad, Ubuntu, Debian
bionic Not vulnerable
(code not present)
focal Not vulnerable
(code not present)
jammy Not vulnerable
(code not present)
kinetic Not vulnerable
(code not compiled)
trusty Not vulnerable
(code not present)
upstream Needs triage

xenial Not vulnerable
(code not present)

Severity score breakdown

Parameter Value
Base score 7.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H