Description
Apache HTTP Server mod_cluster before version httpd 2.4.23 is vulnerable to an Improper Input Validation in the protocol parsing logic in the load balancer resulting in a Segmentation Fault in the serving httpd process.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | mod_cluster | httpd 2.4.23 | — |
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-httpd +8 | 2.4.23-102.jbcs.el6 | RHSA-2017:0194, RHSA-2017:0193 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_auth_kerb | 5.4-35.jbcs.el6 | RHSA-2017:0194, RHSA-2017:0193 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_bmx +1 | 0.9.6-14.GA.jbcs.el6 | RHSA-2017:0194, RHSA-2017:0193 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_cluster-native +1 | 1.3.5-13.Final_redhat_1.jbcs.el6 | RHSA-2017:0194, RHSA-2017:0193 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_jk +3 | 1.2.41-14.redhat_1.jbcs.el6 | RHSA-2017:0194, RHSA-2017:0193 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_rt +1 | 2.4.1-16.GA.jbcs.el6 | RHSA-2017:0194, RHSA-2017:0193 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_security +1 | 2.9.1-18.GA.jbcs.el6 | RHSA-2017:0194, RHSA-2017:0193 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-mod_ssl +1 | 1:2.4.23-102.jbcs.el6 | RHSA-2017:0194, RHSA-2017:0193 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-nghttp2 | 1.12.0-9.jbcs.el6 | RHSA-2017:0194, RHSA-2017:0193 |
| Red Hat JBoss Core Services 1 | jbcs-httpd24-openssl +4 | 1:1.0.2h-12.jbcs.el6 | RHSA-2017:0194, RHSA-2017:0193 |
Advisories 2
- RHSA-2017:0193 Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.23 Release on RHEL 6 Red Hat Security Advisories (RHSA) · Sep 21, 2026
- RHSA-2017:0194 Red Hat Security Advisory: Red Hat JBoss Core Services Apache HTTP Server 2.4.23 Release on RHEL 7 Red Hat Security Advisories (RHSA) · Sep 21, 2026
References
- 94939 vdb-entry
- https://security.netapp.com/advisory/ntap-20180601-0005/
- RHSA-2017:0194 vendor-advisory
- RHSA-2017:0193 vendor-advisory
- RHSA-2016:2957 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1387605