{"id":"UBUNTU-CVE-2025-49506","details":"APR-util versions 1.6.3 (and earlier) function apr_password_validate() was not constant-time with regards to hashes or passwords comparisons, potentially leaking their content via a side channel timing attack particularly on platforms without crypt() such as  Windows, BeOS, NetWare, or Android. Users are recommended to upgrade to version 1.6.4, which fixes this issue.","modified":"2026-09-03T23:05:16.091998628Z","published":"2026-08-06T15:16:00Z","related":["USN-8719-1"],"upstream":["CVE-2025-49506"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-49506"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-49506"},{"type":"REPORT","url":"https://lists.apache.org/thread/2v8o3bj9pb7lfcr57bdnjg9xfkj04mg5"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2026/08/06/8"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8719-1"}],"affected":[{"package":{"name":"apr-util","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/apr-util?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.3-1ubuntu0.1~esm3"}]}],"versions":["1.5.2-1","1.5.2-1build1","1.5.2-2ubuntu1","1.5.3-1","1.5.3-1ubuntu0.1~esm1","1.5.3-1ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.5.3-1ubuntu0.1~esm3","binary_name":"libaprutil1"},{"binary_version":"1.5.3-1ubuntu0.1~esm3","binary_name":"libaprutil1-dbd-mysql"},{"binary_name":"libaprutil1-dbd-odbc","binary_version":"1.5.3-1ubuntu0.1~esm3"},{"binary_version":"1.5.3-1ubuntu0.1~esm3","binary_name":"libaprutil1-dbd-pgsql"},{"binary_name":"libaprutil1-dbd-sqlite3","binary_version":"1.5.3-1ubuntu0.1~esm3"},{"binary_name":"libaprutil1-ldap","binary_version":"1.5.3-1ubuntu0.1~esm3"}],"availability":"Available with Ubuntu Pro with Legacy support add-on: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-49506.json"}},{"package":{"name":"apr-util","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/apr-util?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.1-2ubuntu0.1+esm1"}]}],"versions":["1.6.0-2","1.6.1-1","1.6.1-1ubuntu2","1.6.1-2","1.6.1-2ubuntu0.1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"libaprutil1","binary_version":"1.6.1-2ubuntu0.1+esm1"},{"binary_version":"1.6.1-2ubuntu0.1+esm1","binary_name":"libaprutil1-dbd-mysql"},{"binary_name":"libaprutil1-dbd-odbc","binary_version":"1.6.1-2ubuntu0.1+esm1"},{"binary_name":"libaprutil1-dbd-pgsql","binary_version":"1.6.1-2ubuntu0.1+esm1"},{"binary_name":"libaprutil1-dbd-sqlite3","binary_version":"1.6.1-2ubuntu0.1+esm1"},{"binary_version":"1.6.1-2ubuntu0.1+esm1","binary_name":"libaprutil1-ldap"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-49506.json"}},{"package":{"name":"apr-util","ecosystem":"Ubuntu:Pro:20.04:LTS","purl":"pkg:deb/ubuntu/apr-util?arch=source&distro=esm-infra%2Ffocal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.1-4ubuntu2.2+esm1"}]}],"versions":["1.6.1-4build1","1.6.1-4ubuntu1","1.6.1-4ubuntu2","1.6.1-4ubuntu2.1","1.6.1-4ubuntu2.2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.1-4ubuntu2.2+esm1","binary_name":"libaprutil1"},{"binary_name":"libaprutil1-dbd-mysql","binary_version":"1.6.1-4ubuntu2.2+esm1"},{"binary_version":"1.6.1-4ubuntu2.2+esm1","binary_name":"libaprutil1-dbd-odbc"},{"binary_version":"1.6.1-4ubuntu2.2+esm1","binary_name":"libaprutil1-dbd-pgsql"},{"binary_version":"1.6.1-4ubuntu2.2+esm1","binary_name":"libaprutil1-dbd-sqlite3"},{"binary_name":"libaprutil1-ldap","binary_version":"1.6.1-4ubuntu2.2+esm1"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-49506.json"}},{"package":{"name":"apr-util","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/apr-util?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.1-5ubuntu4.22.04.3"}]}],"versions":["1.6.1-5ubuntu2","1.6.1-5ubuntu3","1.6.1-5ubuntu4","1.6.1-5ubuntu4.22.04.1","1.6.1-5ubuntu4.22.04.2"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"1.6.1-5ubuntu4.22.04.3","binary_name":"libaprutil1"},{"binary_name":"libaprutil1-dbd-mysql","binary_version":"1.6.1-5ubuntu4.22.04.3"},{"binary_name":"libaprutil1-dbd-odbc","binary_version":"1.6.1-5ubuntu4.22.04.3"},{"binary_version":"1.6.1-5ubuntu4.22.04.3","binary_name":"libaprutil1-dbd-pgsql"},{"binary_name":"libaprutil1-dbd-sqlite3","binary_version":"1.6.1-5ubuntu4.22.04.3"},{"binary_name":"libaprutil1-ldap","binary_version":"1.6.1-5ubuntu4.22.04.3"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-49506.json"}},{"package":{"name":"apr-util","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/apr-util?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.3-1.1ubuntu7.1"}]}],"versions":["1.6.3-1ubuntu1","1.6.3-1.1ubuntu5","1.6.3-1.1ubuntu6","1.6.3-1.1ubuntu7"],"ecosystem_specific":{"binaries":[{"binary_version":"1.6.3-1.1ubuntu7.1","binary_name":"libaprutil1-dbd-mysql"},{"binary_name":"libaprutil1-dbd-odbc","binary_version":"1.6.3-1.1ubuntu7.1"},{"binary_name":"libaprutil1-dbd-pgsql","binary_version":"1.6.3-1.1ubuntu7.1"},{"binary_name":"libaprutil1-dbd-sqlite3","binary_version":"1.6.3-1.1ubuntu7.1"},{"binary_version":"1.6.3-1.1ubuntu7.1","binary_name":"libaprutil1-ldap"},{"binary_name":"libaprutil1t64","binary_version":"1.6.3-1.1ubuntu7.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-49506.json"}},{"package":{"name":"apr-util","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/apr-util?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.6.3-3ubuntu3.1"}]}],"versions":["1.6.3-3ubuntu2","1.6.3-3ubuntu3"],"ecosystem_specific":{"binaries":[{"binary_name":"libaprutil1-dbd-mysql","binary_version":"1.6.3-3ubuntu3.1"},{"binary_version":"1.6.3-3ubuntu3.1","binary_name":"libaprutil1-dbd-odbc"},{"binary_name":"libaprutil1-dbd-pgsql","binary_version":"1.6.3-3ubuntu3.1"},{"binary_name":"libaprutil1-dbd-sqlite3","binary_version":"1.6.3-3ubuntu3.1"},{"binary_version":"1.6.3-3ubuntu3.1","binary_name":"libaprutil1-ldap"},{"binary_name":"libaprutil1t64","binary_version":"1.6.3-3ubuntu3.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-49506.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}