RHEL 7 / 8 : Red Hat JBoss Core Services Apache HTTP Server 2.4.62 SP4 (RHSA-2026:27200)

high Nessus Plugin ID 321959

Synopsis

The remote Red Hat host is missing one or more security updates for Red Hat JBoss Core Services Apache HTTP Server 2.4.62 SP4.

Description

The remote Redhat Enterprise Linux 7 / 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:27200 advisory.

Red Hat JBoss Core Services is a set of supplementary software for Red Hat JBoss middleware products. This software, such as Apache HTTP Server, is common to multiple JBoss middleware products and packaged under Red Hat JBoss Core Services, to allow for faster distribution of updates and for a more consistent update experience.

This release of Red Hat JBoss Core Services Apache HTTP Server 2.4.62 Service Pack 4 serves as a replacement for Red Hat JBoss Core Services Apache HTTP Server 2.4.62 Service Pack 3, and includes bug fixes and enhancements, which are documented in the Release Notes linked to in the References section.

Security Fix(es):

* jbcs-httpd24-httpd: Apache HTTP Server mod_proxy_ajp: Arbitrary code execution via heap-based buffer overflow (CVE-2026-28780)
* jbcs-httpd24-httpd: HTTP/2: Remote Denial of Service via compression bomb and Slowloris-style attack (CVE-2026-49975)
* jbcs-httpd24-mod_http2: HTTP/2: Remote Denial of Service via compression bomb and Slowloris-style attack (CVE-2026-49975)
* mod_proxy_ajp.so: heap-based buffer over-read due to missing null-termination check (CVE-2026-34032)
* mod_proxy_ajp.so: heap-based buffer over-read and memory disclosure in ajp_parse_data() (CVE-2026-34059)
* mod_authn_socache.so: NULL pointer dereference can cause a child process crash (CVE-2026-33007)
* mod_proxy_ajp.so: off-by-one out-of-bounds reads in AJP getter functions (CVE-2026-33857)
* mod_dav_lock.so: NULL pointer dereference via specially crafted request (CVE-2026-29169)
* jbcs-httpd24-mod_md: unrestricted OCSP response leads to resource exhaustion (CVE-2026-29168)
* jbcs-httpd24-httpd: Apache HTTP Server: HTTP/2 DoS by Memory Increase (CVE-2025-53020)
* nghttp2: nghttp2: Denial of Service via malformed HTTP/2 frames after session termination (CVE-2026-27135)

A Red Hat Security Bulletin which addresses further details about this flaw is available in the References section.

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL Red Hat JBoss Core Services Apache HTTP Server 2.4.62 SP4 package based on the guidance in RHSA-2026:27200.

Plugin Details

Severity: High

ID: 321959

File Name: redhat-RHSA-2026-27200.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 6/22/2026

Updated: 6/22/2026

Supported Sensors: Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-49975

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: CVE-2026-28780

CVSS v4

Risk Factor: High

Base Score: 8.7

Threat Score: 7.7

Threat Vector: CVSS:4.0/E:P

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:jbcs-httpd24-nghttp2, p-cpe:/a:redhat:enterprise_linux:jbcs-httpd24-mod_proxy_html, p-cpe:/a:redhat:enterprise_linux:jbcs-httpd24-nghttp2-devel, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:jbcs-httpd24-mod_ldap, p-cpe:/a:redhat:enterprise_linux:jbcs-httpd24-httpd-selinux, p-cpe:/a:redhat:enterprise_linux:jbcs-httpd24-mod_md, p-cpe:/a:redhat:enterprise_linux:jbcs-httpd24-mod_ssl, p-cpe:/a:redhat:enterprise_linux:jbcs-httpd24-httpd, p-cpe:/a:redhat:enterprise_linux:jbcs-httpd24-httpd-manual, p-cpe:/a:redhat:enterprise_linux:jbcs-httpd24-httpd-tools, p-cpe:/a:redhat:enterprise_linux:jbcs-httpd24-mod_http2, p-cpe:/a:redhat:enterprise_linux:jbcs-httpd24-httpd-devel, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:jbcs-httpd24-mod_session

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 6/22/2026

Vulnerability Publication Date: 7/8/2025

Reference Information

CVE: CVE-2025-53020, CVE-2026-27135, CVE-2026-28780, CVE-2026-29168, CVE-2026-29169, CVE-2026-33007, CVE-2026-33857, CVE-2026-34032, CVE-2026-34059, CVE-2026-49975

CWE: 125, 126, 170, 401, 409, 476, 617, 770, 787

RHSA: 2026:27200

Detections

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