A vulnerability was found in Apache HTTP Server 2.4.34 to 2.4.38. 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. Server that never enabled the h2 protocol or that only enabled it for https: and did not set "H2Upgrade on" are unaffected by this issue.
{ "availability": "No subscription required", "ubuntu_priority": "low", "binaries": [ { "apache2-ssl-dev": "2.4.29-1ubuntu4.10", "apache2-dbg": "2.4.29-1ubuntu4.10", "apache2-dev": "2.4.29-1ubuntu4.10", "apache2-bin": "2.4.29-1ubuntu4.10", "apache2-data": "2.4.29-1ubuntu4.10", "apache2-suexec-pristine": "2.4.29-1ubuntu4.10", "apache2-doc": "2.4.29-1ubuntu4.10", "apache2": "2.4.29-1ubuntu4.10", "apache2-utils": "2.4.29-1ubuntu4.10", "apache2-suexec-custom": "2.4.29-1ubuntu4.10" } ] }