Red Hat Security Advisory: mod_http2 security update
A low severity denial of service (DoS) vulnerability (CVE-2024-36387) exists in the mod_http2 Apache httpd module used in Red Hat Enterprise Linux 9. The flaw is caused by a null pointer dereference triggered by websocket traffic over HTTP/2. Red Hat has released security updates to address this issue.
AI Analysis
Technical Summary
The mod_http2 module for Apache httpd 2.4 servers, which implements the HTTP/2 protocol using libnghttp2, contains a vulnerability (CVE-2024-36387) that allows denial of service via a null pointer dereference when handling websocket connections over HTTP/2. This issue affects multiple versions of Red Hat Enterprise Linux 9 and related packages. Red Hat Product Security has rated the impact as low and has issued a security advisory (RHSA-2024:8680) with patches available to remediate the vulnerability.
Potential Impact
Successful exploitation of this vulnerability can cause a denial of service condition by crashing the mod_http2 module due to a null pointer dereference when processing websocket over HTTP/2 traffic. The impact is limited to service disruption and does not include code execution or data compromise. The severity is rated low by Red Hat.
Mitigation Recommendations
A security update fixing this vulnerability is available from Red Hat as part of Red Hat Enterprise Linux 9 updates. Users should apply the provided patches to affected mod_http2 packages as described in Red Hat advisory RHSA-2024:8680. No additional mitigations are specified or required beyond applying the official update.
Red Hat Security Advisory: mod_http2 security update
Description
A low severity denial of service (DoS) vulnerability (CVE-2024-36387) exists in the mod_http2 Apache httpd module used in Red Hat Enterprise Linux 9. The flaw is caused by a null pointer dereference triggered by websocket traffic over HTTP/2. Red Hat has released security updates to address this issue.
Affected software
pkg:rpm/redhat/mod_http2Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The mod_http2 module for Apache httpd 2.4 servers, which implements the HTTP/2 protocol using libnghttp2, contains a vulnerability (CVE-2024-36387) that allows denial of service via a null pointer dereference when handling websocket connections over HTTP/2. This issue affects multiple versions of Red Hat Enterprise Linux 9 and related packages. Red Hat Product Security has rated the impact as low and has issued a security advisory (RHSA-2024:8680) with patches available to remediate the vulnerability.
Potential Impact
Successful exploitation of this vulnerability can cause a denial of service condition by crashing the mod_http2 module due to a null pointer dereference when processing websocket over HTTP/2 traffic. The impact is limited to service disruption and does not include code execution or data compromise. The severity is rated low by Red Hat.
Mitigation Recommendations
A security update fixing this vulnerability is available from Red Hat as part of Red Hat Enterprise Linux 9 updates. Users should apply the provided patches to affected mod_http2 packages as described in Red Hat advisory RHSA-2024:8680. No additional mitigations are specified or required beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2024:8680
- Cve Count
- 1
Threat ID: 6a419cbb27e9c79719abf004
Added to database: 06/28/2026, 22:14:19 UTC
Last enriched: 08/04/2026, 16:35:32 UTC
Last updated: 09/10/2026, 19:27:30 UTC
Views: 80
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