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Apache HTTPD HTTP/2 'SETTINGS' Data Processing DoS Vulnerability (Linux)
Information
Severity
Severity
Medium
Family
Family
Web Servers
CVSSv2 Base
CVSSv2 Base
4.3
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:M/Au:N/C:N/I:N/A:P
Solution Type
Solution Type
Vendor Patch
Created
Created
5 years ago
Modified
Modified
4 years ago
Summary
This host is running Apache HTTP Server and is prone to denial-of-service vulnerability
Insight
Insight
The flaw is due to an improper processing of specially crafted and continuous SETTINGS data for an ongoing HTTP/2 connection to cause the target service to fail to timeout.
Affected Software
Affected Software
Apache HTTP Server versions 2.4.34, 2.4.33, 2.4.30, 2.4.29, 2.4.28, 2.4.27, 2.4.26, 2.4.25, 2.4.23, 2.4.20, 2.4.18.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Upgrade to Apache HTTP Server 2.4.35 or later. Please see the references for more information.