{"id":"USN-4113-2","summary":"apache2 regression","details":"USN-4113-1 fixed vulnerabilities in the Apache HTTP server.\nUnfortunately, that update introduced a regression when proxying\nbalancer manager connections in some configurations. This update\nfixes the problem.\n\nWe apologize for the inconvenience.\n\nOriginal advisory details:\n\n Stefan Eissing discovered that the HTTP/2 implementation in Apache\n did not properly handle upgrade requests from HTTP/1.1 to HTTP/2 in\n some situations. A remote attacker could use this to cause a denial\n of service (daemon crash). This issue only affected Ubuntu 18.04 LTS\n and Ubuntu 19.04. (CVE-2019-0197)\n\n Craig Young discovered that a memory overwrite error existed in\n Apache when performing HTTP/2 very early pushes in some situations. A\n remote attacker could use this to cause a denial of service (daemon\n crash). This issue only affected Ubuntu 18.04 LTS and Ubuntu 19.04.\n (CVE-2019-10081)\n\n Craig Young discovered that a read-after-free error existed in the\n HTTP/2 implementation in Apache during connection shutdown. A remote\n attacker could use this to possibly cause a denial of service (daemon\n crash) or possibly expose sensitive information. This issue only\n affected Ubuntu 18.04 LTS and Ubuntu 19.04. (CVE-2019-10082)\n\n Matei Badanoiu discovered that the mod_proxy component of\n Apache did not properly filter URLs when reporting errors in some\n configurations. A remote attacker could possibly use this issue to\n conduct cross-site scripting (XSS) attacks. (CVE-2019-10092)\n\n Daniel McCarney discovered that mod_remoteip component of Apache\n contained a stack buffer overflow when parsing headers from a trusted\n intermediary proxy in some situations. A remote attacker controlling a\n trusted proxy could use this to cause a denial of service or possibly\n execute arbitrary code. This issue only affected Ubuntu 19.04.\n (CVE-2019-10097)\n\n Yukitsugu Sasaki discovered that the mod_rewrite component in Apache\n was vulnerable to open redirects in some situations. A remote attacker\n could use this to possibly expose sensitive information or bypass\n intended restrictions. (CVE-2019-10098)\n\n Jonathan Looney discovered that the HTTP/2 implementation in Apache did\n not properly limit the amount of buffering for client connections in\n some situations. A remote attacker could use this to cause a denial\n of service (unresponsive daemon). This issue only affected Ubuntu\n 18.04 LTS and Ubuntu 19.04. (CVE-2019-9517)\n","modified":"2026-02-10T04:41:36Z","published":"2019-09-17T12:24:05Z","references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4113-2"},{"type":"REPORT","url":"https://launchpad.net/bugs/1842701"}],"affected":[{"package":{"name":"apache2","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/apache2@2.4.18-2ubuntu3.13?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.18-2ubuntu3.13"}]}],"versions":["2.4.12-2ubuntu2","2.4.17-1ubuntu1","2.4.17-2ubuntu1","2.4.17-3ubuntu1","2.4.18-1ubuntu1","2.4.18-2ubuntu1","2.4.18-2ubuntu2","2.4.18-2ubuntu3","2.4.18-2ubuntu3.1","2.4.18-2ubuntu3.2","2.4.18-2ubuntu3.3","2.4.18-2ubuntu3.4","2.4.18-2ubuntu3.5","2.4.18-2ubuntu3.7","2.4.18-2ubuntu3.8","2.4.18-2ubuntu3.9","2.4.18-2ubuntu3.10","2.4.18-2ubuntu3.12"],"ecosystem_specific":{"binaries":[{"binary_version":"2.4.18-2ubuntu3.13","binary_name":"apache2"},{"binary_version":"2.4.18-2ubuntu3.13","binary_name":"apache2-bin"},{"binary_version":"2.4.18-2ubuntu3.13","binary_name":"apache2-data"},{"binary_version":"2.4.18-2ubuntu3.13","binary_name":"apache2-dev"},{"binary_version":"2.4.18-2ubuntu3.13","binary_name":"apache2-suexec-custom"},{"binary_version":"2.4.18-2ubuntu3.13","binary_name":"apache2-suexec-pristine"},{"binary_version":"2.4.18-2ubuntu3.13","binary_name":"apache2-utils"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4113-2.json","cves_map":{"ecosystem":"Ubuntu:16.04:LTS","cves":[]}}},{"package":{"name":"apache2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/apache2@2.4.29-1ubuntu4.11?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.29-1ubuntu4.11"}]}],"versions":["2.4.27-2ubuntu3","2.4.29-1ubuntu1","2.4.29-1ubuntu2","2.4.29-1ubuntu3","2.4.29-1ubuntu4","2.4.29-1ubuntu4.1","2.4.29-1ubuntu4.2","2.4.29-1ubuntu4.3","2.4.29-1ubuntu4.4","2.4.29-1ubuntu4.5","2.4.29-1ubuntu4.6","2.4.29-1ubuntu4.7","2.4.29-1ubuntu4.8","2.4.29-1ubuntu4.10"],"ecosystem_specific":{"binaries":[{"binary_version":"2.4.29-1ubuntu4.11","binary_name":"apache2"},{"binary_version":"2.4.29-1ubuntu4.11","binary_name":"apache2-bin"},{"binary_version":"2.4.29-1ubuntu4.11","binary_name":"apache2-data"},{"binary_version":"2.4.29-1ubuntu4.11","binary_name":"apache2-dev"},{"binary_version":"2.4.29-1ubuntu4.11","binary_name":"apache2-ssl-dev"},{"binary_version":"2.4.29-1ubuntu4.11","binary_name":"apache2-suexec-custom"},{"binary_version":"2.4.29-1ubuntu4.11","binary_name":"apache2-suexec-pristine"},{"binary_version":"2.4.29-1ubuntu4.11","binary_name":"apache2-utils"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4113-2.json","cves_map":{"ecosystem":"Ubuntu:18.04:LTS","cves":[]}}}],"schema_version":"1.7.3"}