Red Hat Security Advisory: httpd security update
Multiple security vulnerabilities have been identified in the Apache HTTP Server (httpd) packages provided by Red Hat, including heap-based buffer over-reads, off-by-one out-of-bounds reads, NULL pointer dereference causing process crashes, and a critical heap-based buffer overflow that allows arbitrary code execution in the mod_proxy_ajp module. These issues affect Red Hat Enterprise Linux 9 and related distributions. Red Hat has released an important security update addressing these vulnerabilities. Users should apply the provided update to mitigate these risks.
AI Analysis
Technical Summary
This advisory covers five security vulnerabilities in Red Hat's httpd packages, specifically affecting the mod_proxy_ajp and mod_authn_socache modules. The issues include heap-based buffer over-reads (CVE-2026-34059, CVE-2026-34032), off-by-one out-of-bounds reads (CVE-2026-33857), NULL pointer dereference causing child process crashes (CVE-2026-33007), and a critical heap-based buffer overflow enabling arbitrary code execution (CVE-2026-28780). These vulnerabilities can lead to memory disclosure, process crashes, and remote code execution. The advisory references Red Hat Enterprise Linux 9 versions and provides updated packages to remediate these flaws.
Potential Impact
The vulnerabilities allow attackers to cause memory disclosure, application crashes, and potentially execute arbitrary code remotely via the mod_proxy_ajp module. The heap-based buffer overflow (CVE-2026-28780) is particularly severe as it enables arbitrary code execution, which could compromise affected systems. The NULL pointer dereference can cause denial of service through process crashes. These impacts affect systems running vulnerable versions of Red Hat Enterprise Linux 9 httpd packages.
Mitigation Recommendations
Red Hat has released updated httpd packages that fix these vulnerabilities. Users of affected Red Hat Enterprise Linux 9 versions should apply the security update described in advisory RHSA-2026:21391 promptly. The update includes fixes for all listed CVEs. Refer to Red Hat's official update instructions at https://access.redhat.com/articles/11258 for detailed remediation steps. No additional mitigations are indicated beyond applying the official patch.
Red Hat Security Advisory: httpd security update
Description
Multiple security vulnerabilities have been identified in the Apache HTTP Server (httpd) packages provided by Red Hat, including heap-based buffer over-reads, off-by-one out-of-bounds reads, NULL pointer dereference causing process crashes, and a critical heap-based buffer overflow that allows arbitrary code execution in the mod_proxy_ajp module. These issues affect Red Hat Enterprise Linux 9 and related distributions. Red Hat has released an important security update addressing these vulnerabilities. Users should apply the provided update to mitigate these risks.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This advisory covers five security vulnerabilities in Red Hat's httpd packages, specifically affecting the mod_proxy_ajp and mod_authn_socache modules. The issues include heap-based buffer over-reads (CVE-2026-34059, CVE-2026-34032), off-by-one out-of-bounds reads (CVE-2026-33857), NULL pointer dereference causing child process crashes (CVE-2026-33007), and a critical heap-based buffer overflow enabling arbitrary code execution (CVE-2026-28780). These vulnerabilities can lead to memory disclosure, process crashes, and remote code execution. The advisory references Red Hat Enterprise Linux 9 versions and provides updated packages to remediate these flaws.
Potential Impact
The vulnerabilities allow attackers to cause memory disclosure, application crashes, and potentially execute arbitrary code remotely via the mod_proxy_ajp module. The heap-based buffer overflow (CVE-2026-28780) is particularly severe as it enables arbitrary code execution, which could compromise affected systems. The NULL pointer dereference can cause denial of service through process crashes. These impacts affect systems running vulnerable versions of Red Hat Enterprise Linux 9 httpd packages.
Mitigation Recommendations
Red Hat has released updated httpd packages that fix these vulnerabilities. Users of affected Red Hat Enterprise Linux 9 versions should apply the security update described in advisory RHSA-2026:21391 promptly. The update includes fixes for all listed CVEs. Refer to Red Hat's official update instructions at https://access.redhat.com/articles/11258 for detailed remediation steps. No additional mitigations are indicated beyond applying the official patch.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:21391
- Cve Count
- 5
- Additional Cves
- ["CVE-2026-33007","CVE-2026-33857","CVE-2026-34032","CVE-2026-34059"]
- Cvss Version
- null
Threat ID: 6a18ab6fe29bf47b502887d8
Added to database: 5/28/2026, 8:54:07 PM
Last enriched: 5/28/2026, 9:00:01 PM
Last updated: 5/29/2026, 2:43:27 PM
Views: 10
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