{"id":"DEBIAN-CVE-2021-4217","details":"A flaw was found in unzip. The vulnerability occurs due to improper handling of Unicode strings, which can lead to a null pointer dereference. This flaw allows an attacker to input a specially crafted zip file, leading to a crash or code execution.","modified":"2026-09-15T09:02:29.913099407Z","published":"2022-08-24T16:15:10.090Z","upstream":["CVE-2021-4217"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2021-4217"}],"affected":[{"package":{"name":"unzip","ecosystem":"Debian:12","purl":"pkg:deb/debian/unzip?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.0-28","6.0-28+deb12u1","6.0-29","6.0-30","6.0-31"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-4217.json"}},{"package":{"name":"unzip","ecosystem":"Debian:13","purl":"pkg:deb/debian/unzip?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.0-29","6.0-29+deb13u1","6.0-30","6.0-31"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-4217.json"}},{"package":{"name":"unzip","ecosystem":"Debian:14","purl":"pkg:deb/debian/unzip?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["6.0-29","6.0-30","6.0-31"],"ecosystem_specific":{"urgency":"unimportant"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2021-4217.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L"}]}