{"id":"USN-7639-2","summary":"apache2 vulnerabilities","details":"USN-7639-1 fixed several vulnerabilities in Apache. This update\nprovides the corresponding update for Ubuntu 16.04 LTS, Ubuntu\n18.04 LTS, Ubuntu 20.04 LTS, and addressed a regression\nfix (LP: #2119395). CVE-2025-49630 and CVE-2025-53020 only\naffected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.\n\nOriginal advisory details:\n\n It was discovered that the Apache HTTP Server incorrectly handled\n certain Content-Type response headers. A remote attacker could\n possibly use this issue to perform HTTP response splitting attacks.\n (CVE-2024-42516)\n\n xiaojunjie discovered that the Apache HTTP Server mod_proxy module\n incorrectly handled certain requests. A remote attacker could\n possibly use this issue to send outbound proxy requests to an\n arbitrary URL. (CVE-2024-43204)\n\n John Runyon discovered that the Apache HTTP Server mod_ssl module\n incorrectly escaped certain data. A remote attacker could possibly\n use this issue to insert escape characters into log files.\n (CVE-2024-47252)\n\n Sven Hebrok, Felix Cramer, Tim Storm, Maximilian Radoy, and Juraj\n Somorovsky discovered that the Apache HTTP Server mod_ssl module\n incorrectly handled TLS 1.3 session resumption. A remote attacker\n could possibly use this issue to bypass access control. (CVE-2025-23048)\n\n Anthony CORSIEZ discovered that the Apache HTTP Server mod_proxy_http2\n module incorrectly handled missing host headers. A remote attacker\n could possibly use this issue to cause the server to crash, resulting\n in a denial of service. (CVE-2025-49630)\n\n Robert Merget discovered that the Apache HTTP Server mod_ssl module\n incorrectly handled TLS upgrades. A remote attacker could possibly\n use this issue to hijack an HTTP session. This update removes the\n old \"SSLEngine optional\" configuration option, possibly requiring\n a configuration change in certain environments. (CVE-2025-49812)\n\n Gal Bar Nahum discovered that the Apache HTTP Server incorrectly\n handled certain memory operations. A remote attacker could possibly\n use this issue to cause the server to consume resources, leading\n to a denial of service. (CVE-2025-53020)\n","modified":"2026-05-20T16:06:15.772325967Z","published":"2025-08-19T10:40:27Z","related":["UBUNTU-CVE-2024-42516","UBUNTU-CVE-2024-43204","UBUNTU-CVE-2024-47252","UBUNTU-CVE-2025-23048","UBUNTU-CVE-2025-49630","UBUNTU-CVE-2025-49812","UBUNTU-CVE-2025-53020"],"upstream":["CVE-2024-42516","CVE-2024-43204","CVE-2024-47252","CVE-2025-23048","CVE-2025-49630","CVE-2025-49812","CVE-2025-53020","UBUNTU-CVE-2024-42516","UBUNTU-CVE-2024-43204","UBUNTU-CVE-2024-47252","UBUNTU-CVE-2025-23048","UBUNTU-CVE-2025-49630","UBUNTU-CVE-2025-49812","UBUNTU-CVE-2025-53020"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7639-2"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-42516"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-43204"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-47252"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-23048"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-49630"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-49812"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-53020"},{"type":"REPORT","url":"https://launchpad.net/bugs/2119395"}],"affected":[{"package":{"name":"apache2","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/apache2?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.18-2ubuntu3.17+esm16"}]}],"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","2.4.18-2ubuntu3.17","2.4.18-2ubuntu3.17+esm1","2.4.18-2ubuntu3.17+esm2","2.4.18-2ubuntu3.17+esm3","2.4.18-2ubuntu3.17+esm4","2.4.18-2ubuntu3.17+esm5","2.4.18-2ubuntu3.17+esm6","2.4.18-2ubuntu3.17+esm7","2.4.18-2ubuntu3.17+esm8","2.4.18-2ubuntu3.17+esm9","2.4.18-2ubuntu3.17+esm10","2.4.18-2ubuntu3.17+esm11","2.4.18-2ubuntu3.17+esm12","2.4.18-2ubuntu3.17+esm13","2.4.18-2ubuntu3.17+esm14"],"ecosystem_specific":{"binaries":[{"binary_name":"apache2","binary_version":"2.4.18-2ubuntu3.17+esm16"},{"binary_name":"apache2-bin","binary_version":"2.4.18-2ubuntu3.17+esm16"},{"binary_name":"apache2-data","binary_version":"2.4.18-2ubuntu3.17+esm16"},{"binary_name":"apache2-suexec-custom","binary_version":"2.4.18-2ubuntu3.17+esm16"},{"binary_name":"apache2-suexec-pristine","binary_version":"2.4.18-2ubuntu3.17+esm16"},{"binary_name":"apache2-utils","binary_version":"2.4.18-2ubuntu3.17+esm16"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7639-2.json","cves_map":{"cves":[],"ecosystem":"Ubuntu:Pro:16.04:LTS"}}},{"package":{"name":"apache2","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/apache2?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.29-1ubuntu4.27+esm6"}]}],"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","2.4.29-1ubuntu4.14","2.4.29-1ubuntu4.16","2.4.29-1ubuntu4.17","2.4.29-1ubuntu4.18","2.4.29-1ubuntu4.19","2.4.29-1ubuntu4.20","2.4.29-1ubuntu4.21","2.4.29-1ubuntu4.22","2.4.29-1ubuntu4.23","2.4.29-1ubuntu4.24","2.4.29-1ubuntu4.25","2.4.29-1ubuntu4.26","2.4.29-1ubuntu4.27","2.4.29-1ubuntu4.27+esm1","2.4.29-1ubuntu4.27+esm2","2.4.29-1ubuntu4.27+esm3","2.4.29-1ubuntu4.27+esm4"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"apache2","binary_version":"2.4.29-1ubuntu4.27+esm6"},{"binary_name":"apache2-bin","binary_version":"2.4.29-1ubuntu4.27+esm6"},{"binary_name":"apache2-data","binary_version":"2.4.29-1ubuntu4.27+esm6"},{"binary_name":"apache2-suexec-custom","binary_version":"2.4.29-1ubuntu4.27+esm6"},{"binary_name":"apache2-suexec-pristine","binary_version":"2.4.29-1ubuntu4.27+esm6"},{"binary_name":"apache2-utils","binary_version":"2.4.29-1ubuntu4.27+esm6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7639-2.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2024-42516"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2024-43204"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2024-47252"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-23048"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-49630"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-49812"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-53020"}],"ecosystem":"Ubuntu:Pro:18.04:LTS"}}},{"package":{"name":"apache2","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/apache2?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.41-4ubuntu3.23+esm2"}]}],"versions":["2.4.41-1ubuntu1","2.4.41-4ubuntu1","2.4.41-4ubuntu2","2.4.41-4ubuntu3","2.4.41-4ubuntu3.1","2.4.41-4ubuntu3.3","2.4.41-4ubuntu3.4","2.4.41-4ubuntu3.5","2.4.41-4ubuntu3.6","2.4.41-4ubuntu3.7","2.4.41-4ubuntu3.8","2.4.41-4ubuntu3.9","2.4.41-4ubuntu3.10","2.4.41-4ubuntu3.11","2.4.41-4ubuntu3.12","2.4.41-4ubuntu3.13","2.4.41-4ubuntu3.14","2.4.41-4ubuntu3.15","2.4.41-4ubuntu3.16","2.4.41-4ubuntu3.17","2.4.41-4ubuntu3.19","2.4.41-4ubuntu3.20","2.4.41-4ubuntu3.21","2.4.41-4ubuntu3.23"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"apache2","binary_version":"2.4.41-4ubuntu3.23+esm2"},{"binary_name":"apache2-bin","binary_version":"2.4.41-4ubuntu3.23+esm2"},{"binary_name":"apache2-data","binary_version":"2.4.41-4ubuntu3.23+esm2"},{"binary_name":"apache2-suexec-custom","binary_version":"2.4.41-4ubuntu3.23+esm2"},{"binary_name":"apache2-suexec-pristine","binary_version":"2.4.41-4ubuntu3.23+esm2"},{"binary_name":"apache2-utils","binary_version":"2.4.41-4ubuntu3.23+esm2"},{"binary_name":"libapache2-mod-md","binary_version":"2.4.41-4ubuntu3.23+esm2"},{"binary_name":"libapache2-mod-proxy-uwsgi","binary_version":"2.4.41-4ubuntu3.23+esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-7639-2.json","cves_map":{"cves":[{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2024-42516"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2024-43204"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2024-47252"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-23048"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-49630"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-49812"},{"severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}],"id":"CVE-2025-53020"}],"ecosystem":"Ubuntu:Pro:20.04:LTS"}}}],"schema_version":"1.7.5"}