{"id":"UBUNTU-CVE-2024-12133","details":"A flaw in libtasn1 causes inefficient handling of specific certificate data. When processing a large number of elements in a certificate, libtasn1 takes much longer than expected, which can slow down or even crash the system. This flaw allows an attacker to send a specially crafted certificate, causing a denial of service attack.","modified":"2026-02-12T06:31:24.332995Z","published":"2025-02-10T16:15:00Z","related":["USN-7275-1","USN-7275-2"],"upstream":["CVE-2024-12133"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2024-12133"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2024-12133"},{"type":"REPORT","url":"https://gitlab.com/gnutls/libtasn1/-/blob/master/doc/security/CVE-2024-12133.md?ref_type=heads"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7275-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-7275-2"}],"affected":[{"package":{"name":"libtasn1-6","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/libtasn1-6@3.4-3ubuntu0.6+esm1?arch=source&distro=esm-infra-legacy/trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.3-2","3.4-2","3.4-3","3.4-3ubuntu0.1","3.4-3ubuntu0.2","3.4-3ubuntu0.3","3.4-3ubuntu0.4","3.4-3ubuntu0.5","3.4-3ubuntu0.6","3.4-3ubuntu0.6+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libtasn1-3-bin","binary_version":"3.4-3ubuntu0.6+esm1"},{"binary_name":"libtasn1-3-dev","binary_version":"3.4-3ubuntu0.6+esm1"},{"binary_name":"libtasn1-6","binary_version":"3.4-3ubuntu0.6+esm1"},{"binary_name":"libtasn1-6-dev","binary_version":"3.4-3ubuntu0.6+esm1"},{"binary_name":"libtasn1-bin","binary_version":"3.4-3ubuntu0.6+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-12133.json"}},{"package":{"name":"libtasn1-6","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libtasn1-6@4.7-3ubuntu0.16.04.3+esm4?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.5-2","4.7-2","4.7-3","4.7-3ubuntu0.16.04.1","4.7-3ubuntu0.16.04.2","4.7-3ubuntu0.16.04.3","4.7-3ubuntu0.16.04.3+esm2","4.7-3ubuntu0.16.04.3+esm3","4.7-3ubuntu0.16.04.3+esm4"],"ecosystem_specific":{"binaries":[{"binary_name":"libtasn1-3-bin","binary_version":"4.7-3ubuntu0.16.04.3+esm4"},{"binary_name":"libtasn1-6","binary_version":"4.7-3ubuntu0.16.04.3+esm4"},{"binary_name":"libtasn1-6-dev","binary_version":"4.7-3ubuntu0.16.04.3+esm4"},{"binary_name":"libtasn1-bin","binary_version":"4.7-3ubuntu0.16.04.3+esm4"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-12133.json"}},{"package":{"name":"libtasn1-6","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/libtasn1-6@4.13-2ubuntu0.1~esm1?arch=source&distro=esm-infra/bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["4.12-2.1","4.12-3","4.13-2","4.13-2ubuntu0.1~esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"libtasn1-6","binary_version":"4.13-2ubuntu0.1~esm1"},{"binary_name":"libtasn1-6-dev","binary_version":"4.13-2ubuntu0.1~esm1"},{"binary_name":"libtasn1-bin","binary_version":"4.13-2ubuntu0.1~esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-12133.json"}},{"package":{"name":"libtasn1-6","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/libtasn1-6@4.16.0-2ubuntu0.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.16.0-2ubuntu0.1"}]}],"versions":["4.14-3","4.15.0-2","4.16.0-2"],"ecosystem_specific":{"binaries":[{"binary_name":"libtasn1-6","binary_version":"4.16.0-2ubuntu0.1"},{"binary_name":"libtasn1-6-dev","binary_version":"4.16.0-2ubuntu0.1"},{"binary_name":"libtasn1-bin","binary_version":"4.16.0-2ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-12133.json"}},{"package":{"name":"libtasn1-6","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/libtasn1-6@4.18.0-4ubuntu0.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.18.0-4ubuntu0.1"}]}],"versions":["4.16.0-2","4.16.0-2build1","4.17.0-2","4.18.0-3","4.18.0-4","4.18.0-4build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libtasn1-6","binary_version":"4.18.0-4ubuntu0.1"},{"binary_name":"libtasn1-6-dev","binary_version":"4.18.0-4ubuntu0.1"},{"binary_name":"libtasn1-bin","binary_version":"4.18.0-4ubuntu0.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-12133.json"}},{"package":{"name":"libtasn1-6","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/libtasn1-6@4.19.0-3ubuntu0.24.04.1?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"4.19.0-3ubuntu0.24.04.1"}]}],"versions":["4.19.0-3","4.19.0-3build1"],"ecosystem_specific":{"binaries":[{"binary_name":"libtasn1-6","binary_version":"4.19.0-3ubuntu0.24.04.1"},{"binary_name":"libtasn1-6-dev","binary_version":"4.19.0-3ubuntu0.24.04.1"},{"binary_name":"libtasn1-bin","binary_version":"4.19.0-3ubuntu0.24.04.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2024/UBUNTU-CVE-2024-12133.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"},{"type":"Ubuntu","score":"medium"}]}