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Apache HTTPD: mod_http2, DoS attack by exhausting h2 workers. (CVE-2019-9517)

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Apache HTTPD: mod_http2, DoS attack by exhausting h2 workers. (CVE-2019-9517)

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:C)
Published
08/13/2019
Created
08/17/2019
Added
08/16/2019
Modified
01/13/2022

Description

A malicious client could perform a DoS attack by flooding a connection with requests and basically never reading responses on the TCP connection. Depending on h2 worker dimensioning, it was possible to block those with relatively few connections.

Solution(s)

  • apache-httpd-upgrade-2_4_41

References

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