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": [ { "binary_version": "2.4.29-1ubuntu4.10", "binary_name": "apache2" }, { "binary_version": "2.4.29-1ubuntu4.10", "binary_name": "apache2-bin" }, { "binary_version": "2.4.29-1ubuntu4.10", "binary_name": "apache2-data" }, { "binary_version": "2.4.29-1ubuntu4.10", "binary_name": "apache2-dbg" }, { "binary_version": "2.4.29-1ubuntu4.10", "binary_name": "apache2-dev" }, { "binary_version": "2.4.29-1ubuntu4.10", "binary_name": "apache2-doc" }, { "binary_version": "2.4.29-1ubuntu4.10", "binary_name": "apache2-ssl-dev" }, { "binary_version": "2.4.29-1ubuntu4.10", "binary_name": "apache2-suexec-custom" }, { "binary_version": "2.4.29-1ubuntu4.10", "binary_name": "apache2-suexec-pristine" }, { "binary_version": "2.4.29-1ubuntu4.10", "binary_name": "apache2-utils" } ] }