{"id":"UBUNTU-CVE-2021-4213","details":"A flaw was found in JSS, where it did not properly free up all memory. Over time, the wasted memory builds up in the server memory, saturating the server’s RAM. This flaw allows an attacker to force the invocation of an out-of-memory process, causing a denial of service.","modified":"2026-05-20T16:05:15.247667377Z","published":"2022-08-24T16:15:00Z","upstream":["CVE-2021-4213"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-4213"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2042900"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-4213"}],"affected":[{"package":{"name":"jss","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/jss?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.3.1-6"],"ecosystem_specific":{"binaries":[{"binary_name":"libjss-java","binary_version":"4.3.1-6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4213.json"}},{"package":{"name":"jss","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/jss?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.4.2-1","4.4.2-2","4.4.2-3","4.4.2-6","4.4.3-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libjss-java","binary_version":"4.4.3-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4213.json"}},{"package":{"name":"jss","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/jss?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.6.1-3","4.6.2-1","4.6.3-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libjss-java","binary_version":"4.6.3-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4213.json"}},{"package":{"name":"jss","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/jss?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.8.0-2","5.0.0-1"],"ecosystem_specific":{"binaries":[{"binary_version":"5.0.0-1","binary_name":"libjss-java"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4213.json"}},{"package":{"name":"jss","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/jss?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.4.2-1","5.5.0-1","5.5.0-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libjss-java","binary_version":"5.5.0-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4213.json"}},{"package":{"name":"jss","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/jss?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.5.0-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libjss-java","binary_version":"5.5.0-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4213.json"}},{"package":{"name":"jss","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/jss?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.5.0-1build1","5.9.0~beta3-3ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"libjss-java","binary_version":"5.9.0~beta3-3ubuntu1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-4213.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:N/A:H"},{"type":"Ubuntu","score":"medium"}]}