{"containers": {"cna": {"affected": [{"product": "unzip", "vendor": "n/a", "versions": [{"status": "affected", "version": "unzip 6.0"}]}], "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-476", "description": "CWE-476 - NULL Pointer Dereference", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2022-08-24T15:08:43.000Z", "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1957077"}, {"tags": ["x_refsource_MISC"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2044583"}, {"tags": ["x_refsource_MISC"], "url": "https://access.redhat.com/security/cve/CVE-2021-4217"}]}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T17:16:04.487Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1957077"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2044583"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://access.redhat.com/security/cve/CVE-2021-4217"}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-10-08T20:55:11.997878Z", "id": "CVE-2021-4217", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-02T18:11:46.107Z"}}]}, "cveMetadata": {"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "assignerShortName": "redhat", "cveId": "CVE-2021-4217", "datePublished": "2022-08-24T15:08:43.000Z", "dateReserved": "2022-01-27T00:00:00.000Z", "dateUpdated": "2026-11-02T18:11:46.107Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.2"}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1957077", "tags": ["x_refsource_MISC", "x_transferred"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2044583", "tags": ["x_refsource_MISC", "x_transferred"]}, {"url": "https://access.redhat.com/security/cve/CVE-2021-4217", "tags": ["x_refsource_MISC", "x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T17:16:04.487Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2021-4217", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-08T20:55:11.997878Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-06-25T14:18:12.096Z"}}], "cna": {"affected": [{"vendor": "n/a", "product": "unzip", "versions": [{"status": "affected", "version": "unzip 6.0"}]}], "references": [{"url": "https://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1957077", "tags": ["x_refsource_MISC"]}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2044583", "tags": ["x_refsource_MISC"]}, {"url": "https://access.redhat.com/security/cve/CVE-2021-4217", "tags": ["x_refsource_MISC"]}], "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-476", "description": "CWE-476 - NULL Pointer Dereference"}]}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2022-08-24T15:08:43.000Z"}}}, "cveMetadata": {"cveId": "CVE-2021-4217", "state": "PUBLISHED", "dateUpdated": "2026-11-02T18:11:46.107Z", "dateReserved": "2022-01-27T00:00:00.000Z", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "datePublished": "2022-08-24T15:08:43.000Z", "assignerShortName": "redhat"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"product": "unzip", "vendor": "n/a", "versions": [{"status": "affected", "version": "unzip 6.0"}]}], "source": "[email protected]"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:unzip_project:unzip:6.0:*:*:*:*:*:*:*", "matchCriteriaId": "4C9BC86B-F353-4390-B288-B528BA8AA0A1", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*", "matchCriteriaId": "80E516C0-98A4-4ADE-B69F-66A772E2BAAA", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*", "matchCriteriaId": "2F6AB192-9D7D-4A9A-8995-E53A9DE9EAFC", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*", "matchCriteriaId": "142AD0DD-4CF3-4D74-9442-459CE3347E3A", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*", "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943", "vulnerable": true}, {"criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "Se ha encontrado un fallo en unzip. La vulnerabilidad es producida debido a un manejo inapropiado de las cadenas Unicode, que puede conllevar a una desreferencia de puntero null. Este fallo permite a un atacante introducir un archivo zip especialmente dise\u00f1ado, lo que conlleva a un fallo o la ejecuci\u00f3n de c\u00f3digo"}], "id": "CVE-2021-4217", "lastModified": "2026-11-02T19:17:46.990", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "LOW", "baseScore": 3.3, "baseSeverity": "LOW", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 1.4, "source": "[email protected]", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-4217", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-10-08T20:55:11.997878Z", "version": "2.0.3"}}]}, "published": "2022-08-24T16:15:10.090", "references": [{"source": "[email protected]", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2021-4217"}, {"source": "[email protected]", "tags": ["Exploit", "Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1957077"}, {"source": "[email protected]", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2044583"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://access.redhat.com/security/cve/CVE-2021-4217"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Patch", "Third Party Advisory"], "url": "https://bugs.launchpad.net/ubuntu/+source/unzip/+bug/1957077"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2044583"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-476"}], "source": "[email protected]", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-476"}], "source": "[email protected]", "type": "Primary"}]}

{"bugzilla": {"description": "unzip: Null pointer dereference in Unicode strings code", "id": "2044583", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2044583"}, "csaw": false, "cvss3": {"cvss3_base_score": "3.3", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L", "status": "draft"}, "cwe": "CWE-476", "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.", "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."], "name": "CVE-2021-4217", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "unzip", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "unzip", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "unzip", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "unzip", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2022-01-14T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-4217\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-4217"], "threat_severity": "Low"}

{}