CVE-2025-20234

A vulnerability in Universal Disk Format (UDF) processing of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to a memory overread during UDF file scanning. An attacker could exploit this vulnerability by submitting a crafted file containing UDF content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process, resulting in a DoS condition on the affected software. For a description of this vulnerability, see the .

CVSS v3 5.3 MEDIUM

5.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://blog.clamav.net/2025/06/clamav-143-and-109-security-patch.html
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-udf-hmwd9nDy

Configurations

No configuration.

History

23 Jun 2025, 20:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-06-18 17:15

Updated : 2025-06-23 20:16

NVD link : CVE-2025-20234

Mitre link : CVE-2025-20234

CVE.ORG link : CVE-2025-20234

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

{"id": "CVE-2025-20234", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "psirt@cisco.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.3, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 1.4, "exploitabilityScore": 3.9}]}, "published": "2025-06-18T17:15:28.833", "references": [{"url": "https://blog.clamav.net/2025/06/clamav-143-and-109-security-patch.html", "source": "psirt@cisco.com"}, {"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-clamav-udf-hmwd9nDy", "source": "psirt@cisco.com"}], "vulnStatus": "Awaiting Analysis", "weaknesses": [{"type": "Primary", "source": "psirt@cisco.com", "description": [{"lang": "en", "value": "CWE-125"}]}], "descriptions": [{"lang": "en", "value": "A vulnerability in Universal Disk Format (UDF) processing of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device.\r\n\r\nThis vulnerability is due to a memory overread during UDF file scanning. An attacker could exploit this vulnerability by submitting a crafted file containing UDF content to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to terminate the ClamAV scanning process, resulting in a DoS condition on the affected software.\r\nFor a description of this vulnerability, see the ."}, {"lang": "es", "value": "Una vulnerabilidad en el procesamiento de Universal Disk Format (UDF) de ClamAV podr\u00eda permitir que un atacante remoto no autenticado provoque una denegaci\u00f3n de servicio (DoS) en un dispositivo afectado. Esta vulnerabilidad se debe a una sobrelectura de memoria durante el an\u00e1lisis de archivos UDF. Un atacante podr\u00eda explotar esta vulnerabilidad enviando un archivo manipulado con contenido UDF para que ClamAV lo analice en un dispositivo afectado. Una explotaci\u00f3n exitosa podr\u00eda permitir al atacante finalizar el proceso de an\u00e1lisis de ClamAV, lo que provocar\u00eda una denegaci\u00f3n de servicio (DoS) en el software afectado. Para obtener una descripci\u00f3n de esta vulnerabilidad, consulte [enlace faltante]."}], "lastModified": "2025-06-23T20:16:59.783", "sourceIdentifier": "psirt@cisco.com"}