{"id":"UBUNTU-CVE-2018-1303","details":"A specially crafted HTTP request header could have crashed the Apache HTTP Server prior to version 2.4.30 due to an out of bound read while preparing data to be cached in shared memory. It could be used as a Denial of Service attack against users of mod_cache_socache. The vulnerability is considered as low risk since mod_cache_socache is not widely used, mod_cache_disk is not concerned by this vulnerability.","modified":"2026-02-04T04:13:40.388153Z","published":"2018-03-26T00:00:00Z","related":["USN-3627-1","USN-3627-2"],"upstream":["CVE-2018-1303"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2018-1303"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2018/03/24/3"},{"type":"REPORT","url":"https://httpd.apache.org/security/vulnerabilities_24.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3627-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-3627-2"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2018-1303"}],"affected":[{"package":{"name":"apache2","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/apache2@2.4.7-1ubuntu4.20?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.7-1ubuntu4.20"}]}],"versions":["2.4.6-2ubuntu2","2.4.6-2ubuntu3","2.4.6-2ubuntu4","2.4.7-1ubuntu1","2.4.7-1ubuntu2","2.4.7-1ubuntu3","2.4.7-1ubuntu4","2.4.7-1ubuntu4.1","2.4.7-1ubuntu4.4","2.4.7-1ubuntu4.5","2.4.7-1ubuntu4.6","2.4.7-1ubuntu4.7","2.4.7-1ubuntu4.8","2.4.7-1ubuntu4.9","2.4.7-1ubuntu4.10","2.4.7-1ubuntu4.11","2.4.7-1ubuntu4.13","2.4.7-1ubuntu4.15","2.4.7-1ubuntu4.16","2.4.7-1ubuntu4.17","2.4.7-1ubuntu4.18","2.4.7-1ubuntu4.19"],"ecosystem_specific":{"binaries":[{"binary_name":"apache2","binary_version":"2.4.7-1ubuntu4.20"},{"binary_name":"apache2-bin","binary_version":"2.4.7-1ubuntu4.20"},{"binary_name":"apache2-data","binary_version":"2.4.7-1ubuntu4.20"},{"binary_name":"apache2-dev","binary_version":"2.4.7-1ubuntu4.20"},{"binary_name":"apache2-mpm-event","binary_version":"2.4.7-1ubuntu4.20"},{"binary_name":"apache2-mpm-itk","binary_version":"2.4.7-1ubuntu4.20"},{"binary_name":"apache2-mpm-prefork","binary_version":"2.4.7-1ubuntu4.20"},{"binary_name":"apache2-mpm-worker","binary_version":"2.4.7-1ubuntu4.20"},{"binary_name":"apache2-suexec","binary_version":"2.4.7-1ubuntu4.20"},{"binary_name":"apache2-suexec-custom","binary_version":"2.4.7-1ubuntu4.20"},{"binary_name":"apache2-suexec-pristine","binary_version":"2.4.7-1ubuntu4.20"},{"binary_name":"apache2-utils","binary_version":"2.4.7-1ubuntu4.20"},{"binary_name":"apache2.2-bin","binary_version":"2.4.7-1ubuntu4.20"},{"binary_name":"libapache2-mod-macro","binary_version":"1:2.4.7-1ubuntu4.20"},{"binary_name":"libapache2-mod-proxy-html","binary_version":"1:2.4.7-1ubuntu4.20"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1303.json"}},{"package":{"name":"apache2","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/apache2@2.4.18-2ubuntu3.8?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.18-2ubuntu3.8"}]}],"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"],"ecosystem_specific":{"binaries":[{"binary_name":"apache2","binary_version":"2.4.18-2ubuntu3.8"},{"binary_name":"apache2-bin","binary_version":"2.4.18-2ubuntu3.8"},{"binary_name":"apache2-data","binary_version":"2.4.18-2ubuntu3.8"},{"binary_name":"apache2-dev","binary_version":"2.4.18-2ubuntu3.8"},{"binary_name":"apache2-suexec-custom","binary_version":"2.4.18-2ubuntu3.8"},{"binary_name":"apache2-suexec-pristine","binary_version":"2.4.18-2ubuntu3.8"},{"binary_name":"apache2-utils","binary_version":"2.4.18-2ubuntu3.8"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1303.json"}},{"package":{"name":"apache2","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/apache2@2.4.29-1ubuntu4.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.29-1ubuntu4.1"}]}],"versions":["2.4.27-2ubuntu3","2.4.29-1ubuntu1","2.4.29-1ubuntu2","2.4.29-1ubuntu3","2.4.29-1ubuntu4"],"ecosystem_specific":{"binaries":[{"binary_name":"apache2","binary_version":"2.4.29-1ubuntu4.1"},{"binary_name":"apache2-bin","binary_version":"2.4.29-1ubuntu4.1"},{"binary_name":"apache2-data","binary_version":"2.4.29-1ubuntu4.1"},{"binary_name":"apache2-dev","binary_version":"2.4.29-1ubuntu4.1"},{"binary_name":"apache2-ssl-dev","binary_version":"2.4.29-1ubuntu4.1"},{"binary_name":"apache2-suexec-custom","binary_version":"2.4.29-1ubuntu4.1"},{"binary_name":"apache2-suexec-pristine","binary_version":"2.4.29-1ubuntu4.1"},{"binary_name":"apache2-utils","binary_version":"2.4.29-1ubuntu4.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1303.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"low"}]}