Vulnerability in Lfs-Book Make-Ca
CVE-2022-21672
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.007 (52.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 52nd percentile — 52.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000
Affected products
- Lfs-Book Make-Ca — versions >= 0.9, < 1.10
- Linuxfromscratch Make-Ca
Weakness classification (CWE)
References
- github.com/lfs-book/make-ca/security/advisories/GHSA-m5qh-728v-4xrx (Patch, Third Party Advisory)
- github.com/lfs-book/make-ca/issues/19 (Third Party Advisory, Mitigation, Issue Tracking)
- github.com/lfs-book/make-ca/pull/20 (Patch, Third Party Advisory)
- lists.linuxfromscratch.org/sympa/arc/blfs-support/2022-01/msg00020.html (Mailing List, Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2022-21672?
- CVE-2022-21672 is a medium-severity vulnerability in Lfs-Book Make-Ca, classified under CWE-115. CVSS score: 6.5/10. Published 2022-01-10.
- How severe is CVE-2022-21672?
- Medium severity. CVSS v3 base score is 6.5 out of 10.