
CVE-2023-40250
https://notcve.org/view.php?id=CVE-2023-40250
12 Jan 2024 — Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in Hancom HCell on Windows allows Overflow Buffers.This issue affects HCell: 12.0.0.893. La vulnerabilidad de copia de búfer sin verificar el tamaño de la entrada ('desbordamiento de búfer clásico') en Hancom HCell en Windows permite desbordamiento de búferes. Este problema afecta a HCell: 12.0.0.893. • https://www.hancom.com/cs_center/csDownload.do?gnb0=25gnb1=80 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •

CVE-2023-50234 – Hancom Office Cell XLS File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability
https://notcve.org/view.php?id=CVE-2023-50234
20 Dec 2023 — Hancom Office Cell XLS File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Hancom Office Cell. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of XLS files. The issue results from the lack of proper validation of the length of user-supplied data prior to copyi... • https://www.zerodayinitiative.com/advisories/ZDI-23-1856 • CWE-121: Stack-based Buffer Overflow •

CVE-2023-50235 – Hancom Office Show PPT File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability
https://notcve.org/view.php?id=CVE-2023-50235
20 Dec 2023 — Hancom Office Show PPT File Parsing Stack-based Buffer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Hancom Office Show. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of PPT files. The issue results from the lack of proper validation of the length of user-supplied data prior to copyi... • https://www.zerodayinitiative.com/advisories/ZDI-23-1857 • CWE-121: Stack-based Buffer Overflow •

CVE-2023-51598 – Hancom Office Word DOC File Parsing Use-After-Free Remote Code Execution Vulnerability
https://notcve.org/view.php?id=CVE-2023-51598
20 Dec 2023 — Hancom Office Word DOC File Parsing Use-After-Free Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Hancom Office Word. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the parsing of DOC files. The issue results from the lack of validating the existence of an object prior to performing operations on the objec... • https://www.zerodayinitiative.com/advisories/ZDI-23-1855 • CWE-416: Use After Free •

CVE-2023-32541
https://notcve.org/view.php?id=CVE-2023-32541
26 Sep 2023 — A use-after-free vulnerability exists in the footerr functionality of Hancom Office 2020 HWord 11.0.0.7520. A specially crafted .doc file can lead to a use-after-free. An attacker can trick a user into opening a malformed file to trigger this vulnerability. Existe una vulnerabilidad de use-after-free en la funcionalidad de pie de página de Hancom Office 2020 HWord 11.0.0.7520. Un archivo .doc especialmente manipulado puede generar un use-after-free. • https://talosintelligence.com/vulnerability_reports/TALOS-2023-1759 • CWE-416: Use After Free •

CVE-2022-33896
https://notcve.org/view.php?id=CVE-2022-33896
07 Oct 2022 — A buffer underflow vulnerability exists in the way Hword of Hancom Office 2020 version 11.0.0.5357 parses XML-based office files. A specially-crafted malformed file can cause memory corruption by using memory before buffer start, which can lead to code execution. A victim would need to access a malicious file to trigger this vulnerability. Se presenta una vulnerabilidad de desbordamiento del búfer en la forma en que Hword de Hancom Office 2020 versión 11.0.0.5357, analiza los archivos de oficina basados en ... • https://talosintelligence.com/vulnerability_reports/TALOS-2022-1574 • CWE-124: Buffer Underwrite ('Buffer Underflow') •

CVE-2021-21958
https://notcve.org/view.php?id=CVE-2021-21958
16 Feb 2022 — A heap-based buffer overflow vulnerability exists in the Hword HwordApp.dll functionality of Hancom Office 2020 11.0.0.2353. A specially-crafted malformed file can lead to memory corruption and potential arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability. Se presenta una vulnerabilidad de desbordamiento de búfer en la región heap de la memoria en la funcionalidad Hword HwordApp.dll de Hancom Office 2020 versión 11.0.0.2353. Un archivo malformado diseñado especia... • https://blog.talosintelligence.com/2022/02/vuln-spotlight-.html • CWE-122: Heap-based Buffer Overflow CWE-787: Out-of-bounds Write •

CVE-2020-7882 – anySign directory traversal vulnerability
https://notcve.org/view.php?id=CVE-2020-7882
22 Nov 2021 — Using the parameter of getPFXFolderList function, attackers can see the information of authorization certification and delete the files. It occurs because the parameter contains path traversal characters(ie. '../../../') Usando el parámetro de la función getPFXFolderList, los atacantes pueden visualizar la información de la certificación de autorización y eliminar los archivos. Esto ocurre porque el parámetro contiene caracteres de salto de ruta (es decir, "../../../") • https://www.boho.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36344 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-24: Path Traversal: '../filedir' •

CVE-2019-16338
https://notcve.org/view.php?id=CVE-2019-16338
19 Mar 2020 — The tfo_common component in HwordApp.dll in Hancom Office 9.6.1.7634 allows a use-after-free via a crafted .docx file. El componente tfo_common en la biblioteca HwordApp.dll en Hancom Office versión 9.6.1.7634, permite un uso de la memoria previamente liberada por medio de un archivo .docx diseñado. • http://help.hancom.com/update_en_multilang/details/HOfficeNEO_update.htm • CWE-416: Use After Free •

CVE-2019-16337
https://notcve.org/view.php?id=CVE-2019-16337
19 Mar 2020 — The hncbd90 component in Hancom Office 9.6.1.9403 allows a use-after-free via an unknown object in a crafted .docx file. El componente hncbd90 en Hancom Office versión 9.6.1.9403, permite un uso de la memoria previamente liberada por medio de un objeto desconocido en un archivo .docx diseñado. • http://help.hancom.com/update_en_multilang/details/HOfficeNEO_update.htm • CWE-416: Use After Free •