{"id":"USN-5029-1","summary":"gnutls28 vulnerabilities","details":"It was discovered that GnuTLS incorrectly handled sending certain\nextensions when being used as a client. A remote attacker could use this\nissue to cause GnuTLS to crash, resulting in a denial of service, or\npossibly execute arbitrary code.\n","modified":"2026-04-22T10:17:09.006025Z","published":"2021-08-02T17:25:02Z","related":["UBUNTU-CVE-2021-20231","UBUNTU-CVE-2021-20232"],"upstream":["CVE-2021-20231","CVE-2021-20232","UBUNTU-CVE-2021-20231","UBUNTU-CVE-2021-20232"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5029-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-20231"},{"type":"REPORT","url":"https://ubuntu.com/security/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":{"binaries":[{"binary_version":"3.6.13-2ubuntu1.6","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"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5029-1.json","cves_map":{"cves":[{"id":"CVE-2021-20231","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","type":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]},{"id":"CVE-2021-20232","severity":[{"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":"CVSS_V3"},{"score":"low","type":"Ubuntu"}]}],"ecosystem":"Ubuntu:20.04:LTS"}}}],"schema_version":"1.7.5"}