CVE-2022-21672

/etc/pki/tls and /etc/ssl/certs include distrusted certificates in make-ca

MEDIUM
6.5
CVSS Score
Published: January 10, 2022 at 09:00 PM UTC
Updated: June 17, 2026 at 04:26 AM UTC
2 products affected across 2 vendorsMake CaMake Ca

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0.9 ≤ v < 1.10
Affected range stops below 1.10, so it looks safe — our inference, not a vendor statement
v < 1.10
Affected range stops below 1.10, so it looks safe — our inference, not a vendor statement

References (4)

x_refsource_MISCIssue TrackingMitigationThird Party Advisory
https://github.com/lfs-book/make-ca/issues/19
x_refsource_MISCPatchThird Party Advisory
https://github.com/lfs-book/make-ca/pull/20

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-115NVD-CWE-Other

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