{"id":"USN-5720-1","summary":"libzstd vulnerabilities","details":"It was discovered that Zstandard was not properly managing file\npermissions when generating output files. A local attacker could\npossibly use this issue to cause a race condition and gain\nunauthorized access to sensitive data.\n","modified":"2026-02-10T04:42:49Z","published":"2022-11-09T12:00:15Z","related":["UBUNTU-CVE-2021-24031","UBUNTU-CVE-2021-24032"],"upstream":["CVE-2021-24031","CVE-2021-24032","UBUNTU-CVE-2021-24031","UBUNTU-CVE-2021-24032"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5720-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-24031"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2021-24032"}],"affected":[{"package":{"name":"libzstd","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/libzstd@1.3.1+dfsg-1~ubuntu0.16.04.1+esm3?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.1+dfsg-1~ubuntu0.16.04.1+esm3"}]}],"versions":["0.4.5-1","0.5.1-1","1.3.1+dfsg-1~ubuntu0.16.04.1","1.3.1+dfsg-1~ubuntu0.16.04.1+esm1","1.3.1+dfsg-1~ubuntu0.16.04.1+esm2"],"ecosystem_specific":{"binaries":[{"binary_version":"1.3.1+dfsg-1~ubuntu0.16.04.1+esm3","binary_name":"libzstd1"},{"binary_version":"1.3.1+dfsg-1~ubuntu0.16.04.1+esm3","binary_name":"libzstd1-dev"},{"binary_version":"1.3.1+dfsg-1~ubuntu0.16.04.1+esm3","binary_name":"zstd"}],"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"},"database_specific":{"cves_map":{"ecosystem":"Ubuntu:Pro:16.04:LTS","cves":[{"id":"CVE-2021-24031","severity":[{"score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2021-24032","severity":[{"score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]},"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-5720-1.json"}}],"schema_version":"1.7.3"}