{"id":"CVE-2024-12133","title":"A flaw in libtasn1 causes inefficient handling of specific certificate data","summary":"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 a…","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-407"],"published":"2025-02-10","updated":"2026-06-29","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-12133","references":[{"url":"https://access.redhat.com/errata/RHSA-2025:17347","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:4049","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:7077","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:8021","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2025:8385","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:30849","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:30850","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2024-12133","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2344611","label":"secalert@redhat.com"},{"url":"https://gitlab.com/gnutls/libtasn1/-/blob/master/doc/security/CVE-2024-12133.md","label":"secalert@redhat.com"},{"url":"https://gitlab.com/gnutls/libtasn1/-/issues/52","label":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2025/02/06/6","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2025/02/msg00025.html","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20250523-0003/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-082556.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-202008.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"},{"url":"https://access.redhat.com/errata/RHSA-2026:33125","label":"RHSA-2026:33125"}],"tags":["nvd","cve.org"],"epss":0.0111,"epssPercentile":0.65749,"ingestedAt":"2026-06-26T16:43:13.407Z","vendor":"Red Hat","product":"libtasn1","affected":["libtasn1 < 4.20.0","libtasn1 (all versions)","libtasn1 (all versions)","gnutls (all versions)","libtasn1 (all versions)","gnutls (all versions)","libtasn1 (all versions)","gnutls (all versions)","libtasn1 (all versions)","gnutls (all versions)","libtasn1 (all versions)","gnutls (all versions)","libtasn1 (all versions)","gnutls (all versions)","libtasn1 (all versions)","libtasn1 (all versions)","libtasn1 (all versions)","libtasn1 (all versions)","libtasn1 (all versions)","discovery/discovery-server-rhel9 (all versions)","discovery/discovery-ui-rhel9 (all versions)","libtasn1 (all versions)","libtasn1","libtasn1","rhcos (all versions)"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2025-02-10T16:25:41.090444Z"},"slug":"CVE-2024-12133","body":"## Overview\n\nA 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}