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HIGH

httpd: DoS for HTTP/2 connections by continuous SETTINGS frames

Published Sep 25, 2018

Description

In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol.

Affected products

Remediation

No remediation recorded yet.

Metrics

References (30)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner apache
Published Sep 25, 2018
Updated Sep 17, 2024
Reserved Jun 5, 2018
NVD
Status Modified
Modified Jun 17, 2026
Red Hat
Severity Moderate
Public date Sep 25, 2018