{"id":"UBUNTU-CVE-2020-12823","details":"OpenConnect 8.09 has a buffer overflow, causing a denial of service (application crash) or possibly unspecified other impact, via crafted certificate data to get_cert_name in gnutls.c.","modified":"2026-04-22T14:02:32.490650Z","published":"2020-05-12T18:15:00Z","upstream":["CVE-2020-12823"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-12823"},{"type":"REPORT","url":"https://gitlab.com/openconnect/openconnect/-/merge_requests/108"},{"type":"REPORT","url":"https://bugs.gentoo.org/721570"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-12823"}],"affected":[{"package":{"name":"openconnect","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/openconnect@7.06-2build2?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.06-2build1","7.06-2build2"],"ecosystem_specific":{"binaries":[{"binary_name":"libopenconnect5","binary_version":"7.06-2build2"},{"binary_name":"openconnect","binary_version":"7.06-2build2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-12823.json"}},{"package":{"name":"openconnect","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/openconnect@7.08-3ubuntu0.18.04.2?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.08-1","7.08-2","7.08-3","7.08-3ubuntu0.18.04.1","7.08-3ubuntu0.18.04.2"],"ecosystem_specific":{"binaries":[{"binary_name":"libopenconnect5","binary_version":"7.08-3ubuntu0.18.04.2"},{"binary_name":"openconnect","binary_version":"7.08-3ubuntu0.18.04.2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-12823.json"}},{"package":{"name":"openconnect","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/openconnect@8.05-1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.02-1build1","8.05-1"],"ecosystem_specific":{"binaries":[{"binary_name":"libopenconnect5","binary_version":"8.05-1"},{"binary_name":"openconnect","binary_version":"8.05-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-12823.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":"Ubuntu","score":"medium"}]}