{"id":"CVE-2021-24032","aliases":["ALPINE-CVE-2021-24032","AZL-38944","AZL-39352","BELL-CVE-2021-24032","DEBIAN-CVE-2021-24032","DSA-4859-1","EUVD-2021-10952","GHSA-ffqj-7pgc-cmj5","JLSEC-2026-121","MGASA-2021-0323","OESA-2021-1094","SUSE-SU-2021:0948-1","UBUNTU-CVE-2021-24032","USN-4760-1","USN-5720-1","openSUSE-SU-2021:0481-1"],"status":"published","title":"Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the...","description":"Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. 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in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. Output files could therefore momentarily be readable or writable to unintended parties.","status":"published","published":"2021-03-04T20:15:21Z","modified":"2026-10-08T21:03:24.633Z","cwes":["CWE-277"],"updated_at":"2026-11-02T14:33:05.331617Z"}],"euvd":[{"id":"EUVD-2021-10952","description":"Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. 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Output files could therefore momentarily be readable or writable to unintended parties.","status":"published","published":"2021-03-04T21:15:12.963Z","modified":"2026-10-09T09:47:27.823313067Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:34.637046Z"},{"id":"JLSEC-2026-121","title":"Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard...","description":"Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. Output files could therefore momentarily be readable or writable to unintended parties.","status":"published","published":"2026-04-15T20:39:05.266Z","modified":"2026-07-25T18:23:55.115435946Z","cvss":[{"version":"2.0","score":1.9,"vector":"AV:L/AC:M/Au:N/C:P/I:N/A:N","level":"low"},{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:47:18.159338Z"},{"id":"OESA-2021-1094","title":"zstd security update","description":"Zstd is a fast lossless compression algorithm. It's backed by a very fast entropy stage, provided by Huff0 and FSE library. It's a real-time compression scenario for zlib levels and has a better compression ratio.\r\n\r\nSecurity Fix(es):\r\n\r\nBeginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. Output files could therefore momentarily be readable or writable to unintended parties.(CVE-2021-24032)","status":"published","published":"2021-03-26T11:04:19Z","modified":"2026-08-18T01:15:17.176734781Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"updated_at":"2026-11-02T15:52:38.987987Z"},{"id":"UBUNTU-CVE-2021-24032","description":"Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. Output files could therefore momentarily be readable or writable to unintended parties.","status":"published","published":"2021-02-20T00:00:00Z","modified":"2026-04-22T12:49:58.61019Z","cvss":[{"version":"3.1","score":4.7,"vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T15:54:26.779273Z"},{"id":"DSA-4859-1","title":"libzstd - security update","status":"published","published":"2021-02-20T00:00:00Z","modified":"2026-03-09T02:09:13.742251Z","updated_at":"2026-11-02T15:46:17.19998Z"},{"id":"MGASA-2021-0323","title":"Updated zstd packages fix a security vulnerability","description":"Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for\nCVE-2021-24031, the Zstandard command-line utility created output files with\ndefault permissions and restricted those permissions immediately afterwards.\nOutput files could therefore momentarily be readable or writable to unintended\nparties (CVE-2021-24032).\n","status":"published","published":"2021-07-09T00:27:08Z","modified":"2026-04-16T04:44:13.314611314Z","updated_at":"2026-11-02T15:49:41.509337Z"},{"id":"openSUSE-SU-2021:0481-1","title":"Security update for zstd","description":"This update for zstd fixes the following issues:\n\n- CVE-2021-24031: Added read permissions to files while being compressed or uncompressed (bsc#1183371).\n- CVE-2021-24032: Fixed a race condition which could have allowed an attacker to access world-readable destination file (bsc#1183370).\n\nThis update was imported from the SUSE:SLE-15:Update update project.","status":"published","published":"2021-03-27T19:04:47Z","modified":"2026-02-04T02:40:04.566388Z","updated_at":"2026-11-02T16:58:31.879684Z"},{"id":"SUSE-SU-2021:0948-1","title":"Security update for zstd","description":"This update for zstd fixes the following issues:\n\n- CVE-2021-24031: Added read permissions to files while being compressed or uncompressed (bsc#1183371).\n- CVE-2021-24032: Fixed a race condition which could have allowed an attacker to access world-readable destination file (bsc#1183370).\n","status":"published","published":"2021-03-24T13:31:47Z","modified":"2026-02-04T04:24:22.854492Z","updated_at":"2026-11-02T15:53:48.690034Z"},{"id":"USN-4760-1","title":"libzstd vulnerabilities","description":"It was discovered that libzstd incorrectly handled file permissions. A\nlocal attacker could possibly use this issue to access certain files,\ncontrary to expectations.\n","status":"published","published":"2021-03-08T18:21:54Z","modified":"2026-04-22T10:11:52.315119Z","updated_at":"2026-11-02T16:58:15.159055Z"},{"id":"USN-5720-1","title":"libzstd vulnerabilities","description":"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","status":"published","published":"2022-11-09T12:00:15Z","modified":"2026-06-25T13:31:32.696902035Z","updated_at":"2026-11-02T16:58:16.20937Z"}]}}