CVE-2022-21672 Information

Description

make-ca is a utility to deliver and manage a complete PKI configuration for workstations and servers. Starting with version 0.9 and prior to version 1.10 make-ca misinterprets Mozilla certdata.txt and treats explicitly untrusted certificates like trusted ones causing those explicitly untrusted certificates trusted by the system. The explicitly untrusted certificates were used by some CAs already hacked. Hostile attackers may perform a MIM attack exploiting them. Everyone using the affected versions of make-ca should upgrade to make-ca-1.10 and run make-ca -f -g as the root user to regenerate the trusted store immediately. As a workaround users may delete the untrusted certificates from /etc/pki/tls and /etc/ssl/certs manually (or by a script) but this is not recommended because the manual changes will be overwritten next time running make-ca to update the trusted anchor.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Reference

https://github.com/lfs-book/make-ca/security/advisories/GHSA-m5qh-728v-4xrx https://github.com/lfs-book/make-ca/issues/19 https://lists.linuxfromscratch.org/sympa/arc/blfs-support/2022-01/msg00020.html https://github.com/lfs-book/make-ca/pull/20

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

6.5