{"id":"UBUNTU-CVE-2021-20232","details":"A flaw was found in gnutls. A use after free issue in client_send_params in lib/ext/pre_shared_key.c may lead to memory corruption and other potential consequences.","modified":"2026-04-22T12:45:04.450706Z","published":"2021-03-12T19:15:00Z","related":["USN-5029-1"],"upstream":["CVE-2021-20232"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-20232"},{"type":"REPORT","url":"https://www.gnutls.org/security-new.html#GNUTLS-SA-2021-03-10"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5029-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2021-20232"}],"affected":[{"package":{"name":"gnutls28","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/gnutls28@3.6.13-2ubuntu1.6?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.6.13-2ubuntu1.6"}]}],"versions":["3.6.9-5ubuntu1","3.6.9-5ubuntu2","3.6.10-5","3.6.11.1-2","3.6.11.1-2ubuntu2","3.6.13-2ubuntu1","3.6.13-2ubuntu1.1","3.6.13-2ubuntu1.2","3.6.13-2ubuntu1.3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"gnutls-bin","binary_version":"3.6.13-2ubuntu1.6"},{"binary_name":"guile-gnutls","binary_version":"3.6.13-2ubuntu1.6"},{"binary_name":"libgnutls-dane0","binary_version":"3.6.13-2ubuntu1.6"},{"binary_name":"libgnutls-openssl27","binary_version":"3.6.13-2ubuntu1.6"},{"binary_name":"libgnutls30","binary_version":"3.6.13-2ubuntu1.6"},{"binary_name":"libgnutlsxx28","binary_version":"3.6.13-2ubuntu1.6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-20232.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:H/I:H/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},{"type":"Ubuntu","score":"low"}]}