{"id":"CVE-2025-20234","aliases":["CLSA-2025-1756202550","CLSA-2025-1756409595","DEBIAN-CVE-2025-20234","EUVD-2025-27685","GHSA-xwph-f2wp-xxgp","SUSE-SU-2025:02119-1","SUSE-SU-2025:02200-1","SUSE-SU-2025:02201-1","UBUNTU-CVE-2025-20234","USN-7615-1","USN-7615-2","openSUSE-SU-2025:15211-1"],"status":"published","title":"ClamAV UDF File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability","description":"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 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Advisory","advisory","report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-20234"},{"url":"https://github.com/advisories/GHSA-xwph-f2wp-xxgp"},{"url":"https://errata.tuxcare.com/els_os/ubuntu18.04els/CLSA-2025-1756202550.html","tags":["advisory"]},{"url":"https://errata.tuxcare.com/els_os/centos7els/CLSA-2025-1756409595.html","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-20234","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2025/suse-su-202502119-1/","tags":["advisory"]},{"url":"https://bugzilla.suse.com/1243565","tags":["report"]},{"url":"https://bugzilla.suse.com/1245054","tags":["report"]},{"url":"https://bugzilla.suse.com/1245055","tags":["report"]},{"url":"https://www.suse.com/security/cve/CVE-2025-20234","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-20260","tags":["web"]},{"url":"https://www.suse.com/support/update/announcement/2025/suse-su-202502200-1/","tags":["advisory"]},{"url":"https://www.suse.com/support/update/announcement/2025/suse-su-202502201-1/","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-20234","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-20234","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-7615-1","tags":["advisory"]},{"url":"https://ubuntu.com/security/notices/USN-7615-2","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-20260","tags":["report"]},{"url":"","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-20234","title":"ClamAV UDF File Parsing Out-Of-Bounds Read Information Disclosure Vulnerability","description":"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 .","status":"published","published":"2025-06-18T16:20:01.175Z","modified":"2025-06-18T18:22:44.697Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:32:25.186422Z"}],"euvd":[{"id":"EUVD-2025-27685","description":"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 .","status":"published","published":"2025-06-18T16:20:01Z","modified":"2025-06-18T18:22:44Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T20:32:20.01453Z"}],"ghsa":[{"id":"GHSA-xwph-f2wp-xxgp","title":"A vulnerability in Universal Disk Format (UDF) processing of ClamAV could allow an...","description":"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.\n\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.\nFor a description of this vulnerability, see the .","status":"published","published":"2025-06-18T18:30:33Z","modified":"2025-06-18T18:30:38Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T15:02:45.735544Z"}],"nvd":[{"id":"CVE-2025-20234","description":"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 .","status":"published","published":"2025-06-18T17:15:28.833Z","modified":"2026-06-17T08:41:08.853Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-125"],"updated_at":"2026-11-02T14:11:13.247441Z"}],"osv":[{"id":"CVE-2025-20234","description":"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 .","status":"published","published":"2025-06-18T17:15:28.833Z","modified":"2026-10-24T15:08:03.850061909Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:46.665428Z"},{"id":"DEBIAN-CVE-2025-20234","description":"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 \r 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.\r For a description of this vulnerability, see the .","status":"published","published":"2025-06-18T17:15:28.833Z","modified":"2026-09-01T20:05:41.685252595Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:45.102284Z"},{"id":"UBUNTU-CVE-2025-20234","description":"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 .","status":"published","published":"2025-06-18T17:15:00Z","modified":"2026-04-22T15:33:01.471422Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:55:20.144818Z"},{"id":"CLSA-2025-1756202550","title":"Fix of 9 CVEs","description":"   * Update up to 1.4.3 LTS\n     - CVE-2025-20260\n     - CVE-2025-20234\n     - CVE-2025-20128\n     - CVE-2024-20505, CVE-2024-20506\n     - CVE-2023-20197\n     - CVE-2023-20212\n     - CVE-2023-20032\n     - CVE-2023-20052","status":"published","published":"2025-08-26T10:02:35Z","modified":"2026-06-04T10:04:10.772300369Z","updated_at":"2026-11-02T15:43:42.025438Z"},{"id":"CLSA-2025-1756409595","title":"clamav: Fix of 4 CVEs","description":"- Update to 1.4.3 LTS\n- CVE-2025-20260: Fixed a possible buffer overflow write bug in\n  the PDF file parser\n- CVE-2025-20234: Fixed a possible buffer overflow read bug in\n  the UDF file parser\n- CVE-2025-20128: Fixed a possible buffer overflow read bug in\n  the OLE2 file parser\n- CVE-2024-20506: Changed the logging module to disable following\n  symlinks on Linux and Unix systems so as to prevent an attacker\n  with existing access to the 'clamd' or 'freshclam' services from\n  using a symlink to corrupt system files","status":"published","published":"2025-08-28T19:33:18Z","modified":"2026-10-21T10:47:55.344470814Z","updated_at":"2026-11-02T15:43:42.025438Z"},{"id":"openSUSE-SU-2025:15211-1","title":"clamav-1.4.3-1.1 on GA media","description":"These are all security issues fixed in the clamav-1.4.3-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-07-03T00:00:00Z","modified":"2026-03-23T04:53:30.085985Z","updated_at":"2026-11-02T16:58:37.399567Z"},{"id":"SUSE-SU-2025:02119-1","title":"Security update for clamav","description":"This update for clamav fixes the following issues:\n\nClamAV version 1.4.3:\n\n- CVE-2025-20260: PDF Scanning Buffer Overflow Vulnerability (bsc#1245054).\n- CVE-2025-20234: Vulnerability in Universal Disk Format (UDF) processing (bsc#1245055).\n\nOther bugfixes:\n\n- Fix a race condition between the mockup servers started by different test cases in freshclam_test.py (bsc#1243565)\n","status":"published","published":"2025-06-26T08:21:39Z","modified":"2026-03-23T04:46:27.429005Z","updated_at":"2026-11-02T15:53:56.647031Z"},{"id":"SUSE-SU-2025:02200-1","title":"Security update for clamav","description":"This update for clamav fixes the following issues:\n\nClamAV version 1.4.3:\n\n- CVE-2025-20260: PDF Scanning Buffer Overflow Vulnerability (bsc#1245054).\n- CVE-2025-20234: Vulnerability in Universal Disk Format (UDF) processing (bsc#1245055).\n","status":"published","published":"2025-07-02T13:03:38Z","modified":"2026-03-23T04:46:28.781605Z","updated_at":"2026-11-02T15:53:56.647031Z"},{"id":"SUSE-SU-2025:02201-1","title":"Security update for clamav","description":"This update for clamav fixes the following issues:\n\nClamAV version 1.4.3:\n\n- CVE-2025-20260: PDF Scanning Buffer Overflow Vulnerability (bsc#1245054).\n- CVE-2025-20234: Vulnerability in Universal Disk Format (UDF) processing (bsc#1245055).\n\nOther bugfixes:\n\n- Fix a race condition between the mockup servers started by different test cases in freshclam_test.py (bsc#1243565)\n","status":"published","published":"2025-07-02T13:04:36Z","modified":"2026-03-23T04:46:28.661086Z","updated_at":"2026-11-02T15:53:56.647031Z"},{"id":"USN-7615-1","title":"clamav vulnerabilities","description":"It was discovered that ClamAV incorrectly handled scanning UDF files. A\nremote attacker could possibly use this issue to cause ClamAV to crash,\nresulting in a denial of service. (CVE-2025-20234)\n\nIt was discovered that ClamAV incorrectly handled scanning PDF files. A\nremote attacker could use this issue to cause ClamAV to crash, resulting\nin a denial of service, or possibly execute arbitrary code.\n(CVE-2025-20260)","status":"published","published":"2025-07-02T12:46:18Z","modified":"2026-04-27T18:17:11.60280637Z","updated_at":"2026-11-02T16:58:19.988474Z"},{"id":"USN-7615-2","title":"clamav vulnerabilities","description":"USN-7615-1 fixed several vulnerabilities in ClamAV. This update provides\nthe corresponding update for Ubuntu 20.04 LTS.\n\nOriginal advisory details:\n\n It was discovered that ClamAV incorrectly handled scanning UDF files. A\n remote attacker could possibly use this issue to cause ClamAV to crash,\n resulting in a denial of service. (CVE-2025-20234)\n\n It was discovered that ClamAV incorrectly handled scanning PDF files. A\n remote attacker could use this issue to cause ClamAV to crash, resulting\n in a denial of service, or possibly execute arbitrary code.\n (CVE-2025-20260)\n","status":"published","published":"2025-07-07T09:59:07Z","modified":"2026-04-27T18:17:09.98424205Z","updated_at":"2026-11-02T16:58:19.988474Z"}]}}