What is CVE-2021-40088?

CVE-2021-40088 is a medium-severity vulnerability in Primekey Ejbca, classified under Missing Authorization. CVSS score: 5.4/10. Published 2021-08-25.

How severe is CVE-2021-40088?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Auth bypass in Primekey Ejbca

CVE-2021-40088

An issue was discovered in PrimeKey EJBCA before 7.6.0. CMP RA Mode can be configured to use a known client certificate to authenticate enrolling clients. The same RA client certificate is used for revocation requests as well. While enrollment enforces multi tenancy constraints (by verifying that the client certificate has access to the CA and Profiles being enrolled against), this check was not performed when authenticating revocation operations, allowing a known tenant to revoke a certificate belonging to another tenant.

Vulnerability class: Broken Access Control

EPSS: 0.004 (28.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L.

Affected products

Primekey Ejbca
N/a — versions n/a

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-40088?: CVE-2021-40088 is a medium-severity vulnerability in Primekey Ejbca, classified under Missing Authorization. CVSS score: 5.4/10. Published 2021-08-25.
How severe is CVE-2021-40088?: Medium severity. CVSS v3 base score is 5.4 out of 10.