Description
A flaw was found in JBCS httpd in version 2.4.37 SP3, where it uses a back-end worker SSL certificate with the keystore file's ID is 'unknown'. The validation of the certificate whether CN and hostname are matching stopped working and allow connecting to the back-end work. The highest threat from this vulnerability is to data integrity.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | JBCS httpd | JBCS httpd 2.4.37 SP5 | — |
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 JBoss Core Services 1 | jbcs-httpd24-apr +1 | 1.6.3-104.jbcs.el6 | RHSA-2020:4384 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-apr-util +8 | 1.6.1-75.jbcs.el6 | RHSA-2020:4384 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-brotli +1 | 1.0.6-38.jbcs.el6 | RHSA-2020:4384 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-curl +2 | 7.64.1-44.jbcs.el6 | RHSA-2020:4384 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-httpd +6 | 2.4.37-64.jbcs.el6 | RHSA-2020:4384 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-jansson +1 | 2.11-53.jbcs.el6 | RHSA-2020:4384 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_cluster-native | 1.3.14-11.Final_redhat_2.jbcs.el6 | RHSA-2020:4384 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_http2 | 1.15.7-11.jbcs.el6 | RHSA-2020:4384 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_jk +2 | 1.2.48-10.redhat_1.jbcs.el6 | RHSA-2020:4384 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_md | 1:2.0.8-30.jbcs.el6 | RHSA-2020:4384 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_security | 2.9.2-57.GA.jbcs.el6 | RHSA-2020:4384 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_ssl +1 | 1:2.4.37-64.jbcs.el6 | RHSA-2020:4384 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-nghttp2 +1 | 1.39.2-34.jbcs.el6 | RHSA-2020:4384 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-openssl +4 | 1:1.1.1c-32.jbcs.el6 | RHSA-2020:4384 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-openssl-chil | 1.0.0-1.jbcs.el7 | RHSA-2020:4384 |
Advisories 1
- RHSA-2020:4384 Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.37 SP5 security update Red Hat Security Advisories (RHSA) · Oct 14, 2026