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Apache HTTP Server < 2.4.38 HTTP/2 DoS Vulnerability (Linux)
Information
Severity
Severity
Medium
Family
Family
Web Servers
CVSSv2 Base
CVSSv2 Base
5.0
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Solution Type
Solution Type
Vendor Patch
Created
Created
5 years ago
Modified
Modified
5 years ago
Summary
By sending request bodies in a slow loris way to plain resources, the h2 stream for that request unnecessarily occupied a server thread cleaning up that incoming data. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol.
Affected Software
Affected Software
Apache HTTP server version 2.4.37 and prior.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Update to version 2.4.38 or later.