/etc/pki/tls and /etc/ssl/certs include distrusted certificates in make-ca
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| lfs-book | make-ca | 0.9 to before 1.10 | 1.10 | Patch available | CNA |
- make-ca Vendorlfs-book Affected 0.9 to before 1.10 Fixed in 1.10 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:linuxfromscratch:make-ca:*:*:*:*:*:*:*:* | 0.9 to before 1.10 | Vulnerable | Linuxfromscratch |
- cpe:2.3:a:linuxfromscratch:make-ca:*:*:*:*:*:*:*:* Versions 0.9 to before 1.10 Vulnerable ·Linuxfromscratch
Remediation
- Fix · CNA make-ca (lfs-book) Fixed in 1.10
Timeline
- 2026-10-02 Threatist record created from CVE-2022-21672
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences