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Apache HTTPD: mod_http2, possible crash on late upgrade (CVE-2019-0197)

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Apache HTTPD: mod_http2, possible crash on late upgrade (CVE-2019-0197)

Severity
5
CVSS
(AV:N/AC:M/Au:S/C:N/I:P/A:P)
Published
04/02/2019
Created
04/22/2019
Added
04/02/2019
Modified
01/13/2022

Description

When HTTP/2 was enabled for a http: host or H2Upgrade was enabled for h2 on a https: host, an Upgrade request from http/1.1 to http/2 that was not the first request on a connection could lead to a misconfiguration and crash. A server that never enabled the h2 protocol or that only enabled it for https: and did not configure the "H2Upgrade on" is unaffected by this.

Solution(s)

  • apache-httpd-upgrade-2_4_39

References

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