{"id":"UBUNTU-CVE-2023-27522","details":"HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.55. Special characters in the origin response header can truncate/split the response forwarded to the client.","modified":"2026-04-22T16:39:28.922178Z","published":"2023-03-07T16:15:00Z","related":["USN-5942-1"],"upstream":["CVE-2023-27522"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2023-27522"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5942-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2023-27522"}],"affected":[{"package":{"name":"apache2","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/apache2@2.4.41-4ubuntu3.14?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.41-4ubuntu3.14"}]}],"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"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"apache2","binary_version":"2.4.41-4ubuntu3.14"},{"binary_name":"apache2-bin","binary_version":"2.4.41-4ubuntu3.14"},{"binary_name":"apache2-data","binary_version":"2.4.41-4ubuntu3.14"},{"binary_name":"apache2-suexec-custom","binary_version":"2.4.41-4ubuntu3.14"},{"binary_name":"apache2-suexec-pristine","binary_version":"2.4.41-4ubuntu3.14"},{"binary_name":"apache2-utils","binary_version":"2.4.41-4ubuntu3.14"},{"binary_name":"libapache2-mod-md","binary_version":"2.4.41-4ubuntu3.14"},{"binary_name":"libapache2-mod-proxy-uwsgi","binary_version":"2.4.41-4ubuntu3.14"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-27522.json"}},{"package":{"name":"apache2","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/apache2@2.4.52-1ubuntu4.4?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.52-1ubuntu4.4"}]}],"versions":["2.4.48-3.1ubuntu3","2.4.48-3.1ubuntu4","2.4.51-2ubuntu1","2.4.52-1ubuntu1","2.4.52-1ubuntu2","2.4.52-1ubuntu4","2.4.52-1ubuntu4.1","2.4.52-1ubuntu4.2","2.4.52-1ubuntu4.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"apache2","binary_version":"2.4.52-1ubuntu4.4"},{"binary_version":"2.4.52-1ubuntu4.4","binary_name":"apache2-bin"},{"binary_name":"apache2-data","binary_version":"2.4.52-1ubuntu4.4"},{"binary_name":"apache2-suexec-custom","binary_version":"2.4.52-1ubuntu4.4"},{"binary_name":"apache2-suexec-pristine","binary_version":"2.4.52-1ubuntu4.4"},{"binary_name":"apache2-utils","binary_version":"2.4.52-1ubuntu4.4"},{"binary_name":"libapache2-mod-md","binary_version":"2.4.52-1ubuntu4.4"},{"binary_name":"libapache2-mod-proxy-uwsgi","binary_version":"2.4.52-1ubuntu4.4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2023/UBUNTU-CVE-2023-27522.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},{"type":"Ubuntu","score":"medium"}]}