{"api_version":"1","generated_at":"2026-04-23T04:10:50+00:00","cve":"CVE-2021-1404","urls":{"html":"https://cve.report/CVE-2021-1404","api":"https://cve.report/api/cve/CVE-2021-1404.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-1404","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-1404"},"summary":{"title":"CVE-2021-1404","description":"A vulnerability in the PDF parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper buffer size tracking that may result in a heap buffer over-read. An attacker could exploit this vulnerability by sending a crafted PDF file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition.","state":"PUBLIC","assigner":"psirt@cisco.com","published_at":"2021-04-08 05:15:00","updated_at":"2022-08-05 17:18:00"},"problem_types":["CWE-125"],"metrics":[],"references":[{"url":"https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html","name":"https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html","refsource":"CISCO","tags":[],"title":"ClamAV® blog: ClamAV 0.103.2 security patch release","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-1404","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-1404","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"1404","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"clamav","cpe5":"clamav","cpe6":"0.103.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"1404","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"clamav","cpe5":"clamav","cpe6":"0.103.1","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2021-1404","qid":"174899","title":"SUSE Enterprise Linux Security Update for clamav (SUSE-SU-2021:1174-1)"},{"cve":"CVE-2021-1404","qid":"174903","title":"SUSE Enterprise Linux Security Update for clamav (SUSE-SU-2021:1190-1)"},{"cve":"CVE-2021-1404","qid":"174911","title":"SUSE Enterprise Linux Security Update for clamav (SUSE-SU-2021:1189-1)"},{"cve":"CVE-2021-1404","qid":"179824","title":"Debian Security Update for clamav (CVE-2021-1404)"},{"cve":"CVE-2021-1404","qid":"198334","title":"Ubuntu Security Notification for ClamAV vulnerabilities (USN-4918-1)"},{"cve":"CVE-2021-1404","qid":"375524","title":"ClamAV Multiple Vulnerability"},{"cve":"CVE-2021-1404","qid":"500100","title":"Alpine Linux Security Update for clamav"},{"cve":"CVE-2021-1404","qid":"503825","title":"Alpine Linux Security Update for clamav"},{"cve":"CVE-2021-1404","qid":"690182","title":"Free Berkeley Software Distribution (FreeBSD) Security Update for clamav (9ae2c00f-97d0-11eb-8cd6-080027f515ea)"},{"cve":"CVE-2021-1404","qid":"750265","title":"OpenSUSE Security Update for clamav (openSUSE-SU-2021:0555-1)"},{"cve":"CVE-2021-1404","qid":"900102","title":"CBL-Mariner Linux Security Update for clamav 0.103.0"},{"cve":"CVE-2021-1404","qid":"903084","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for clamav (4077)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"psirt@cisco.com","DATE_PUBLIC":"2021-04-08T12:08:00.000Z","ID":"CVE-2021-1404","STATE":"PUBLIC","TITLE":"Clam AntiVirus (ClamAV) Email Parser Denial of Service Vulnerability"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"ClamAV","version":{"version_data":[{"version_affected":"=","version_value":"0.103.0"},{"version_affected":"=","version_value":"0.103.1"}]}}]},"vendor_name":"Cisco"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"A vulnerability in the PDF parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper buffer size tracking that may result in a heap buffer over-read. An attacker could exploit this vulnerability by sending a crafted PDF file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition."}]},"generator":{"engine":"Vulnogram 0.0.9"},"impact":{"cvss":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"CWE-20 Improper Input Validation"}]}]},"references":{"reference_data":[{"name":"https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html","refsource":"CISCO","url":"https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html"}]},"source":{"advisory":"https://blog.clamav.net/2021/04/clamav-01032-security-patch-release.html","discovery":"UNKNOWN"}},"nvd":{"publishedDate":"2021-04-08 05:15:00","lastModifiedDate":"2022-08-05 17:18:00","problem_types":["CWE-125"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:N/I:N/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":5},"severity":"MEDIUM","exploitabilityScore":10,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:clamav:clamav:0.103.0:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:clamav:clamav:0.103.1:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"1404","Ordinal":"191477","Title":"CVE-2021-1404","CVE":"CVE-2021-1404","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"1404","Ordinal":"1","NoteData":"A vulnerability in the PDF parsing module in Clam AntiVirus (ClamAV) Software versions 0.103.0 and 0.103.1 could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. The vulnerability is due to improper buffer size tracking that may result in a heap buffer over-read. An attacker could exploit this vulnerability by sending a crafted PDF file to an affected device. An exploit could allow the attacker to cause the ClamAV scanning process to crash, resulting in a denial of service condition.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"1404","Ordinal":"2","NoteData":"2021-04-08","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"1404","Ordinal":"3","NoteData":"2021-04-13","Type":"Other","Title":"Modified"}]}}}