{"id":"ALPINE-CVE-2021-42373","details":"A NULL pointer dereference in Busybox's man applet leads to denial of service when a section name is supplied but no page argument is given","modified":"2026-03-09T01:22:55.738267Z","published":"2021-11-15T21:15:07.473Z","upstream":["CVE-2021-42373"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-42373"}],"affected":[{"package":{"name":"busybox","ecosystem":"Alpine:v3.11","purl":"pkg:apk/alpine/busybox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-42373.json"}},{"package":{"name":"busybox","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/busybox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-42373.json"}},{"package":{"name":"busybox","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/busybox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-42373.json"}},{"package":{"name":"busybox","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/busybox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-42373.json"}},{"package":{"name":"busybox","ecosystem":"Alpine:v3.15","purl":"pkg:apk/alpine/busybox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-42373.json"}},{"package":{"name":"busybox","ecosystem":"Alpine:v3.16","purl":"pkg:apk/alpine/busybox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-42373.json"}},{"package":{"name":"busybox","ecosystem":"Alpine:v3.17","purl":"pkg:apk/alpine/busybox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-42373.json"}},{"package":{"name":"busybox","ecosystem":"Alpine:v3.18","purl":"pkg:apk/alpine/busybox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-42373.json"}},{"package":{"name":"busybox","ecosystem":"Alpine:v3.19","purl":"pkg:apk/alpine/busybox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-42373.json"}},{"package":{"name":"busybox","ecosystem":"Alpine:v3.20","purl":"pkg:apk/alpine/busybox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-42373.json"}},{"package":{"name":"busybox","ecosystem":"Alpine:v3.21","purl":"pkg:apk/alpine/busybox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-42373.json"}},{"package":{"name":"busybox","ecosystem":"Alpine:v3.22","purl":"pkg:apk/alpine/busybox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-42373.json"}},{"package":{"name":"busybox","ecosystem":"Alpine:v3.23","purl":"pkg:apk/alpine/busybox?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/alpine/ALPINE-CVE-2021-42373.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}