CVE-2021-44531

Description

Accepting arbitrary Subject Alternative Name (SAN) types, unless a PKI is specifically defined to use a particular SAN type, can result in bypassing name-constrained intermediates. Node.js < 12.22.9, < 14.18.3, < 16.13.2, and < 17.3.1 was accepting URI SAN types, which PKIs are often not defined to use. Additionally, when a protocol allows URI SANs, Node.js did not match the URI correctly.Versions of Node.js with the fix for this disable the URI SAN type when checking a certificate against a hostname. This behavior can be reverted through the --security-revert command-line option.

How to fix CVE-2021-44531

To remediate CVE-2021-44531, upgrade the affected package to a fixed version below.

• —upgrade to 12.22.10-r0 or later
• —upgrade to 12.22.9 or later
• —upgrade to 12.22.9 or later
• —upgrade to 12.22.12~dfsg-1~deb11u1 or later

Is CVE-2021-44531 being exploited?

Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.

Affected packages (4)

• from 0, < 12.22.10-r0
• from 0, < 12.22.9, >= 14.0.0, < 14.18.3, >= 16.0.0, < 16.13.2, >= 17.0.0, < 17.3.1
• from 0, < 12.22.9, >= 14.0.0, < 14.18.3, >= 16.0.0, < 16.13.2, >= 17.0.0, < 17.3.1
• from 0, < 12.22.12~dfsg-1~deb11u1

CVSS scores

References (9)

• ADVISORYsecurity.alpinelinux.org/vuln/CVE-2021-44531
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2021-44531
• WEBhackerone.com/reports/1429694
• WEBnodejs.org/en/blog/vulnerability/jan-2022-security-releases/
• WEB