{"id":"USN-4458-1","summary":"apache2 vulnerabilities","details":"Fabrice Perez discovered that the Apache mod_rewrite module incorrectly\nhandled certain redirects. A remote attacker could possibly use this issue\nto perform redirects to an unexpected URL. (CVE-2020-1927)\n\nChamal De Silva discovered that the Apache mod_proxy_ftp module incorrectly\nhandled memory when proxying to a malicious FTP server. A remote attacker\ncould possibly use this issue to obtain sensitive information.\n(CVE-2020-1934)\n\nFelix Wilhelm discovered that the HTTP/2 implementation in Apache did not\nproperly handle certain Cache-Digest headers. A remote attacker could\npossibly use this issue to cause Apache to crash, resulting in a denial of\nservice. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.\n(CVE-2020-9490)\n\nFelix Wilhelm discovered that the Apache mod_proxy_uwsgi module incorrectly\nhandled large headers. A remote attacker could use this issue to obtain\nsensitive information or possibly execute arbitrary code. This issue only\naffected Ubuntu 20.04 LTS. (CVE-2020-11984)\n\nFelix Wilhelm discovered that the HTTP/2 implementation in Apache did not\nproperly handle certain logging statements. A remote attacker could\npossibly use this issue to cause Apache to crash, resulting in a denial of\nservice. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.\n(CVE-2020-11993)\n","modified":"2026-04-24T09:17:34.379734314Z","published":"2020-08-13T14:27:59Z","related":["UBUNTU-CVE-2020-11984","UBUNTU-CVE-2020-11993","UBUNTU-CVE-2020-1927","UBUNTU-CVE-2020-1934","UBUNTU-CVE-2020-9490"],"upstream":["CVE-2020-11984","CVE-2020-11993","CVE-2020-9490","UBUNTU-CVE-2020-11984","UBUNTU-CVE-2020-11993","UBUNTU-CVE-2020-9490"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4458-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-9490"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-11984"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-11993"}],"affected":[{"package":{"name":"apache2","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/apache2@2.4.18-2ubuntu3.17?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.18-2ubuntu3.17"}]}],"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","2.4.18-2ubuntu3.13","2.4.18-2ubuntu3.14","2.4.18-2ubuntu3.15"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"apache2","binary_version":"2.4.18-2ubuntu3.17"},{"binary_name":"apache2-bin","binary_version":"2.4.18-2ubuntu3.17"},{"binary_name":"apache2-data","binary_version":"2.4.18-2ubuntu3.17"},{"binary_name":"apache2-suexec-custom","binary_version":"2.4.18-2ubuntu3.17"},{"binary_name":"apache2-suexec-pristine","binary_version":"2.4.18-2ubuntu3.17"},{"binary_name":"apache2-utils","binary_version":"2.4.18-2ubuntu3.17"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4458-1.json","cves_map":{"cves":[],"ecosystem":"Ubuntu:16.04:LTS"}}},{"package":{"name":"apache2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/apache2@2.4.29-1ubuntu4.14?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.29-1ubuntu4.14"}]}],"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","2.4.29-1ubuntu4.11","2.4.29-1ubuntu4.12","2.4.29-1ubuntu4.13"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"apache2","binary_version":"2.4.29-1ubuntu4.14"},{"binary_name":"apache2-bin","binary_version":"2.4.29-1ubuntu4.14"},{"binary_name":"apache2-data","binary_version":"2.4.29-1ubuntu4.14"},{"binary_name":"apache2-suexec-custom","binary_version":"2.4.29-1ubuntu4.14"},{"binary_name":"apache2-suexec-pristine","binary_version":"2.4.29-1ubuntu4.14"},{"binary_name":"apache2-utils","binary_version":"2.4.29-1ubuntu4.14"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4458-1.json","cves_map":{"cves":[{"id":"CVE-2020-9490","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]},{"id":"CVE-2020-11993","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}],"ecosystem":"Ubuntu:18.04:LTS"}}},{"package":{"name":"apache2","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/apache2@2.4.41-4ubuntu3.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.41-4ubuntu3.1"}]}],"versions":["2.4.41-1ubuntu1","2.4.41-4ubuntu1","2.4.41-4ubuntu2","2.4.41-4ubuntu3"],"ecosystem_specific":{"availability":"No 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