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CVE-2022-38178

Published: 21 September 2022

By spoofing the target resolver with responses that have a malformed EdDSA signature, an attacker can trigger a small memory leak. It is possible to gradually erode available memory to the point where named crashes for lack of resources.

Notes

AuthorNote
alexmurray
As of isc-dhcp-4.4.3-1, isc-dhcp vendors bind9 libs
leosilva
versions affected: 9.9.12 - 9.9.13, 9.10.7 - 9.10.8,
9.18.0 - 9.18.6, 9.19.0 - 9.19.4.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
bind9
Launchpad, Ubuntu, Debian
kinetic
Released (1:9.18.4-2ubuntu2)
trusty Not vulnerable

upstream Needs triage

xenial Not vulnerable

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)
isc-dhcp
Launchpad, Ubuntu, Debian
kinetic Not vulnerable
(code not compiled)
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)

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