Description
Red Hat PKI Common Framework (rhpki-common) in Red Hat Certificate System (aka Certificate Server or RHCS) 7.1 through 7.3, and Netscape Certificate Management System 6.x, does not recognize Certificate Authority profile constraints on Extensions, which might allow remote attackers to bypass intended restrictions and conduct man-in-the-middle attacks by submitting a certificate signing request (CSR) and using the resulting certificate.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Certificate System 7 | rhpki-common | 7.2.0-11 | RHSA-2008:0577, RHSA-2008:0500 |
Advisories 2
- RHSA-2008:0577 Red Hat Security Advisory: rhpki-common security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
- RHSA-2008:0500 Red Hat Security Advisory: rhpki-common security update Red Hat Security Advisories (RHSA) · Nov 22, 2025
References
- 30062 vdb-entry
- rhcs-rhpkicommon-csr-security-bypass(43573) vdb-entry
- RHSA-2008:0500 vendor-advisory
- 1020427 vdb-entry
- RHSA-2008:0577 vendor-advisory
- 30929 third-party-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=445227