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CVE-2021-22884

Published: 3 March 2021

Node.js before 10.24.0, 12.21.0, 14.16.0, and 15.10.0 is vulnerable to DNS rebinding attacks as the whitelist includes “localhost6”. When “localhost6” is not present in /etc/hosts, it is just an ordinary domain that is resolved via DNS, i.e., over network. If the attacker controls the victim's DNS server or can spoof its responses, the DNS rebinding protection can be bypassed by using the “localhost6” domain. As long as the attacker uses the “localhost6” domain, they can still apply the attack described in CVE-2018-7160.

Priority

Medium

Cvss 3 Severity Score

7.5

Score breakdown

Status

Package Release Status
nodejs
Launchpad, Ubuntu, Debian
impish Ignored
(end of life)
lunar Not vulnerable
(18.7.0+dfsg-5ubuntu1)
trusty Not vulnerable
(code not present)
bionic
Released (8.10.0~dfsg-2ubuntu0.4+esm3)
Available with Ubuntu Pro
focal
Released (10.19.0~dfsg-3ubuntu1.2)
groovy Ignored
(end of life)
hirsute Ignored
(end of life)
upstream
Released (12.21.0~dfsg-1)
jammy Not vulnerable
(12.22.9~dfsg-1ubuntu3)
xenial Not vulnerable
(code not present)
kinetic Ignored
(end of life, was needs-triage)
mantic Not vulnerable
(18.7.0+dfsg-5ubuntu1)

Severity score breakdown

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