{"id":"UBUNTU-CVE-2021-25329","details":"The fix for CVE-2020-9484 was incomplete. When using Apache Tomcat 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41, 8.5.0 to 8.5.61 or 7.0.0. to 7.0.107 with a configuration edge case that was highly unlikely to be used, the Tomcat instance was still vulnerable to CVE-2020-9494. Note that both the previously published prerequisites for CVE-2020-9484 and the previously published mitigations for CVE-2020-9484 also apply to this issue.","modified":"2026-07-15T19:45:18.841209930Z","published":"2021-03-01T12:15:00Z","related":["USN-5360-1","USN-6908-1"],"upstream":["CVE-2021-25329"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-25329"},{"type":"REPORT","url":"https://www.openwall.com/lists/oss-security/2021/03/01/2"},{"type":"REPORT","url":"http://www.openwall.com/lists/oss-security/2021/03/01/2"},{"type":"REPORT","url":"https://lists.apache.org/thread.html/rf6d5d57b114678d8898005faef31e9fd6d7c981fcc4ccfc3bc272fc9@%3Cdev.tomcat.apache.org%3E"},{"type":"REPORT","url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf%40%3Cannounce.tomcat.apache.org%3E"},{"type":"REPORT","url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf@%3Cannounce.apache.org%3E"},{"type":"REPORT","url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf@%3Cannounce.tomcat.apache.org%3E"},{"type":"REPORT","url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf@%3Cdev.tomcat.apache.org%3E"},{"type":"REPORT","url":"https://lists.apache.org/thread.html/rfe62fbf9d4c314f166fe8c668e50e5d9dd882a99447f26f0367474bf@%3Cusers.tomcat.apache.org%3E"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5360-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-25329"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-6908-1"}],"affected":[{"package":{"name":"tomcat7","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/tomcat7?arch=source&distro=trusty%2Fesm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.0.52-1ubuntu0.16+esm1"}]}],"versions":["7.0.42-1","7.0.47-1","7.0.50-1","7.0.52-1","7.0.52-1ubuntu0.1","7.0.52-1ubuntu0.3","7.0.52-1ubuntu0.6","7.0.52-1ubuntu0.7","7.0.52-1ubuntu0.8","7.0.52-1ubuntu0.9","7.0.52-1ubuntu0.10","7.0.52-1ubuntu0.11","7.0.52-1ubuntu0.13","7.0.52-1ubuntu0.14","7.0.52-1ubuntu0.15","7.0.52-1ubuntu0.16"],"ecosystem_specific":{"binaries":[{"binary_name":"libservlet3.0-java","binary_version":"7.0.52-1ubuntu0.16+esm1"},{"binary_name":"libtomcat7-java","binary_version":"7.0.52-1ubuntu0.16+esm1"},{"binary_version":"7.0.52-1ubuntu0.16+esm1","binary_name":"tomcat7"},{"binary_name":"tomcat7-admin","binary_version":"7.0.52-1ubuntu0.16+esm1"},{"binary_version":"7.0.52-1ubuntu0.16+esm1","binary_name":"tomcat7-common"},{"binary_name":"tomcat7-docs","binary_version":"7.0.52-1ubuntu0.16+esm1"},{"binary_version":"7.0.52-1ubuntu0.16+esm1","binary_name":"tomcat7-examples"},{"binary_name":"tomcat7-user","binary_version":"7.0.52-1ubuntu0.16+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/2021/UBUNTU-CVE-2021-25329.json"}},{"package":{"name":"tomcat6","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/tomcat6?arch=source&distro=esm-infra-legacy%2Ftrusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.0.37-1","6.0.39-1","6.0.39-1ubuntu0.1","6.0.39-1ubuntu0.1+esm1","6.0.39-1ubuntu0.1+esm2","6.0.39-1ubuntu0.1+esm3"],"ecosystem_specific":{"binaries":[{"binary_version":"6.0.39-1ubuntu0.1+esm3","binary_name":"libservlet2.4-java"},{"binary_name":"libservlet2.5-java","binary_version":"6.0.39-1ubuntu0.1+esm3"},{"binary_version":"6.0.39-1ubuntu0.1+esm3","binary_name":"libtomcat6-java"},{"binary_name":"tomcat6","binary_version":"6.0.39-1ubuntu0.1+esm3"},{"binary_version":"6.0.39-1ubuntu0.1+esm3","binary_name":"tomcat6-admin"},{"binary_version":"6.0.39-1ubuntu0.1+esm3","binary_name":"tomcat6-common"},{"binary_name":"tomcat6-docs","binary_version":"6.0.39-1ubuntu0.1+esm3"},{"binary_name":"tomcat6-examples","binary_version":"6.0.39-1ubuntu0.1+esm3"},{"binary_version":"6.0.39-1ubuntu0.1+esm3","binary_name":"tomcat6-extras"},{"binary_version":"6.0.39-1ubuntu0.1+esm3","binary_name":"tomcat6-user"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-25329.json"}},{"package":{"name":"tomcat7","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/tomcat7?arch=source&distro=esm-apps%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.0.68-1ubuntu0.4+esm2"}]}],"versions":["7.0.64-1","7.0.68-1","7.0.68-1ubuntu0.1","7.0.68-1ubuntu0.3","7.0.68-1ubuntu0.4","7.0.68-1ubuntu0.4+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libservlet3.0-java","binary_version":"7.0.68-1ubuntu0.4+esm2"},{"binary_name":"libtomcat7-java","binary_version":"7.0.68-1ubuntu0.4+esm2"},{"binary_name":"tomcat7","binary_version":"7.0.68-1ubuntu0.4+esm2"},{"binary_name":"tomcat7-admin","binary_version":"7.0.68-1ubuntu0.4+esm2"},{"binary_name":"tomcat7-common","binary_version":"7.0.68-1ubuntu0.4+esm2"},{"binary_version":"7.0.68-1ubuntu0.4+esm2","binary_name":"tomcat7-docs"},{"binary_version":"7.0.68-1ubuntu0.4+esm2","binary_name":"tomcat7-examples"},{"binary_version":"7.0.68-1ubuntu0.4+esm2","binary_name":"tomcat7-user"}],"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-25329.json"}},{"package":{"name":"tomcat8","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/tomcat8?arch=source&distro=esm-infra-legacy%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.0.26-1","8.0.28-1","8.0.30-1","8.0.32-1","8.0.32-1ubuntu1","8.0.32-1ubuntu1.1","8.0.32-1ubuntu1.2","8.0.32-1ubuntu1.3","8.0.32-1ubuntu1.4","8.0.32-1ubuntu1.5","8.0.32-1ubuntu1.6","8.0.32-1ubuntu1.7","8.0.32-1ubuntu1.8","8.0.32-1ubuntu1.9","8.0.32-1ubuntu1.10","8.0.32-1ubuntu1.11","8.0.32-1ubuntu1.13","8.0.32-1ubuntu1.13+esm1","8.0.32-1ubuntu1.13+esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"8.0.32-1ubuntu1.13+esm2","binary_name":"libservlet3.1-java"},{"binary_version":"8.0.32-1ubuntu1.13+esm2","binary_name":"libtomcat8-java"},{"binary_name":"tomcat8","binary_version":"8.0.32-1ubuntu1.13+esm2"},{"binary_version":"8.0.32-1ubuntu1.13+esm2","binary_name":"tomcat8-admin"},{"binary_name":"tomcat8-common","binary_version":"8.0.32-1ubuntu1.13+esm2"},{"binary_name":"tomcat8-docs","binary_version":"8.0.32-1ubuntu1.13+esm2"},{"binary_name":"tomcat8-examples","binary_version":"8.0.32-1ubuntu1.13+esm2"},{"binary_version":"8.0.32-1ubuntu1.13+esm2","binary_name":"tomcat8-user"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-25329.json"}},{"package":{"name":"tomcat9","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/tomcat9?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.16-3ubuntu0.18.04.2"}]}],"versions":["9.0.16-3~18.04.1","9.0.16-3ubuntu0.18.04.1"],"ecosystem_specific":{"binaries":[{"binary_name":"libtomcat9-embed-java","binary_version":"9.0.16-3ubuntu0.18.04.2"},{"binary_name":"libtomcat9-java","binary_version":"9.0.16-3ubuntu0.18.04.2"},{"binary_name":"tomcat9","binary_version":"9.0.16-3ubuntu0.18.04.2"},{"binary_name":"tomcat9-admin","binary_version":"9.0.16-3ubuntu0.18.04.2"},{"binary_version":"9.0.16-3ubuntu0.18.04.2","binary_name":"tomcat9-common"},{"binary_name":"tomcat9-docs","binary_version":"9.0.16-3ubuntu0.18.04.2"},{"binary_name":"tomcat9-examples","binary_version":"9.0.16-3ubuntu0.18.04.2"},{"binary_name":"tomcat9-user","binary_version":"9.0.16-3ubuntu0.18.04.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-25329.json"}},{"package":{"name":"tomcat7","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/tomcat7?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"7.0.78-1ubuntu0.1~esm1"}]}],"versions":["7.0.78-1"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro: https://ubuntu.com/pro","binaries":[{"binary_version":"7.0.78-1ubuntu0.1~esm1","binary_name":"libservlet3.0-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-25329.json"}},{"package":{"name":"tomcat8","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/tomcat8?arch=source&distro=esm-apps%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.5.21-1ubuntu1","8.5.29-1","8.5.30-1","8.5.30-1ubuntu1","8.5.30-1ubuntu1.2","8.5.30-1ubuntu1.3","8.5.30-1ubuntu1.4","8.5.39-1ubuntu1~18.04.1","8.5.39-1ubuntu1~18.04.2","8.5.39-1ubuntu1~18.04.3","8.5.39-1ubuntu1~18.04.3+esm1","8.5.39-1ubuntu1~18.04.3+esm2","8.5.39-1ubuntu1~18.04.3+esm3","8.5.39-1ubuntu1~18.04.3+esm4","8.5.39-1ubuntu1~18.04.3+esm5","8.5.39-1ubuntu1~18.04.3+esm6"],"ecosystem_specific":{"binaries":[{"binary_name":"libtomcat8-embed-java","binary_version":"8.5.39-1ubuntu1~18.04.3+esm6"},{"binary_name":"libtomcat8-java","binary_version":"8.5.39-1ubuntu1~18.04.3+esm6"},{"binary_name":"tomcat8","binary_version":"8.5.39-1ubuntu1~18.04.3+esm6"},{"binary_version":"8.5.39-1ubuntu1~18.04.3+esm6","binary_name":"tomcat8-admin"},{"binary_name":"tomcat8-common","binary_version":"8.5.39-1ubuntu1~18.04.3+esm6"},{"binary_name":"tomcat8-docs","binary_version":"8.5.39-1ubuntu1~18.04.3+esm6"},{"binary_version":"8.5.39-1ubuntu1~18.04.3+esm6","binary_name":"tomcat8-examples"},{"binary_name":"tomcat8-user","binary_version":"8.5.39-1ubuntu1~18.04.3+esm6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-25329.json"}},{"package":{"name":"tomcat9","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/tomcat9?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.0.31-1ubuntu0.2"}]}],"versions":["9.0.24-1","9.0.27-1","9.0.31-1","9.0.31-1ubuntu0.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"libtomcat9-embed-java","binary_version":"9.0.31-1ubuntu0.2"},{"binary_name":"libtomcat9-java","binary_version":"9.0.31-1ubuntu0.2"},{"binary_version":"9.0.31-1ubuntu0.2","binary_name":"tomcat9"},{"binary_version":"9.0.31-1ubuntu0.2","binary_name":"tomcat9-admin"},{"binary_name":"tomcat9-common","binary_version":"9.0.31-1ubuntu0.2"},{"binary_name":"tomcat9-docs","binary_version":"9.0.31-1ubuntu0.2"},{"binary_name":"tomcat9-examples","binary_version":"9.0.31-1ubuntu0.2"},{"binary_version":"9.0.31-1ubuntu0.2","binary_name":"tomcat9-user"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-25329.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]}