{"id":"CVE-2021-42381","details":"A use-after-free in Busybox's awk applet leads to denial of service and possibly code execution when processing a crafted awk pattern in the hash_init function","modified":"2026-05-18T05:53:33.433691597Z","published":"2021-11-15T21:15:07.913Z","related":["SUSE-SU-2022:0135-1","SUSE-SU-2022:0135-2","SUSE-SU-2022:3959-1","SUSE-SU-2022:4253-1","openSUSE-SU-2022:0135-1","openSUSE-SU-2024:11738-1"],"database_specific":{"unresolved_ranges":[{"cpes":["cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*","cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*"],"vendor_product":"fedoraproject:fedora","source":"CPE_FIELD","extracted_events":[{"last_affected":"33"},{"last_affected":"34"}]}]},"references":[{"type":"WEB","url":"https://claroty.com/team82/research/unboxing-busybox-14-vulnerabilities-uncovered-by-claroty-jfrog"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00012.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6T2TURBYYJGBMQTTN2DSOAIQGP7WCPGV/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UQXGOGWBIYWOIVXJVRKHZR34UMEHQBXS/"},{"type":"ADVISORY","url":"https://jfrog.com/blog/unboxing-busybox-14-new-vulnerabilities-uncovered-by-claroty-and-jfrog/"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20211223-0002/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/mirror/busybox","events":[{"introduced":"64406a92a054f884747553011d4529103e2900e4"},{"last_affected":"bcc5b0e6caca6c7602a6a41faa5f980292e0fbc5"}],"database_specific":{"extracted_events":[{"introduced":"1.21.0"},{"last_affected":"1.33.1"}],"cpe":"cpe:2.3:a:busybox:busybox:*:*:*:*:*:*:*:*","source":"CPE_FIELD"}}],"versions":["1_33_1","1_33_0","1_32_0","1_31_0","1_30_0","1_29_0","1_28_0","1_27_0","1_26_0","1_25_0","1_24_0","1_23_0","1_22_0","1_21_0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-42381.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"}]}