{"id":"CVE-2024-12243","title":"Gnutls: gnutls impacted by inefficient der decoding in libtasn1 leading to remote dos","summary":"A flaw was found in GnuTLS, which relies on libtasn1 for ASN.1 data processing. Due to an inefficient algorithm in libtasn1, decoding certain DER-encoded certificate data can take excessive time, leading to increased resource consumption…","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","cvssSource":"cna","cwe":["CWE-407"],"vendor":"Red Hat","product":"gnutls","affected":["gnutls <= 3.6.16","gnutls >= 3.7.0 <= 3.7.11","gnutls >= 3.8.0 < 3.8.8","gnutls (all versions)","gnutls (all versions)","gnutls (all versions)","gnutls (all versions)","gnutls (all versions)","gnutls (all versions)","discovery/discovery-server-rhel9 (all versions)","discovery/discovery-ui-rhel9 (all versions)","gnutls (all versions)","gnutls","gnutls","rhcos (all versions)"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2025-02-10T16:25:20.087658Z"},"published":"2025-02-10","updated":"2026-10-15","sourceUpdated":"2026-10-15T00:37:59.907Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2024-12243","references":[{"url":"https://access.redhat.com/errata/RHSA-2025:17361","label":"RHSA-2025:17361"},{"url":"https://access.redhat.com/errata/RHSA-2025:4051","label":"RHSA-2025:4051"},{"url":"https://access.redhat.com/errata/RHSA-2025:7076","label":"RHSA-2025:7076"},{"url":"https://access.redhat.com/errata/RHSA-2025:8020","label":"RHSA-2025:8020"},{"url":"https://access.redhat.com/errata/RHSA-2025:8385","label":"RHSA-2025:8385"},{"url":"https://access.redhat.com/security/cve/CVE-2024-12243"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2344615","label":"RHBZ#2344615"},{"url":"https://gitlab.com/gnutls/gnutls/-/issues/1553"},{"url":"https://gitlab.com/gnutls/libtasn1/-/issues/52"}],"tags":["cve.org"],"epss":0.01292,"epssPercentile":0.69696,"ingestedAt":"2026-10-15T04:46:37.302Z","slug":"CVE-2024-12243","body":"## Overview\n\nA flaw was found in GnuTLS, which relies on libtasn1 for ASN.1 data processing. Due to an inefficient algorithm in libtasn1, decoding certain DER-encoded certificate data can take excessive time, leading to increased resource consumption. This flaw allows a remote attacker to send a specially crafted certificate, causing GnuTLS to become unresponsive or slow, resulting in a denial-of-service condition.\n\n## Affected\n\n- `gnutls <= 3.6.16`\n- `gnutls >= 3.7.0 <= 3.7.11`\n- `gnutls >= 3.8.0 < 3.8.8`\n- `gnutls (all versions)`\n- `gnutls (all versions)`\n- `gnutls (all versions)`\n- `gnutls (all versions)`\n- `gnutls (all versions)`\n- `gnutls (all versions)`\n- `discovery/discovery-server-rhel9 (all versions)`\n- `discovery/discovery-ui-rhel9 (all versions)`\n- `gnutls (all versions)`\n- `gnutls`\n- `gnutls`\n- `rhcos (all versions)`\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":0.3,"exploitation":0,"ransomware":0},"changes":[]}