XLS-to-DBatLoader-or-GuLoader-for-AgentTesla-variant

EL ARCHIVO ANALIZADO Análisis basado en PCAP | Fecha: 2025-03-12 | Autor: BlackOclock TABLA DE CONTENIDOS 1. VISIÓN GENERAL DEL ANÁLISIS 1.1 El Archivo Analizado Solo PCAP 1.2 Cronología de la Infección y Mapeo CVE 2. ANÁLISIS DEL TRÁFICO DE RED 2.1 Jerarquía de Protocolos – Visión General 2.2...

Maldoc-Analysis

Maldoc-Analysis En marzo de 2023, se identificó una nueva muestra como malware. Dicho malware proviene de archivos con extensión .xls y .doc, y se conoce con el nombre de "Bank Slip.xls". La actividad del malware está relacionada con vulnerabilidades identificadas como CVE-2017-11882 y...

XLMMacroDeobfuscator

XLMMacroDeobfuscator XLMMacroDeobfuscator se puede utilizar para decodificar macros XLM ofuscadas también conocidas como macros de Excel 4.0. Utiliza un emulador XLM interno para interpretar las macros, sin ejecutar completamente el código. Soporta los formatos xls, xlsm y xlsb. Usa xlrd2, pyxlsb...

JLSEC-2026-1295

Buffer Overflow vulnerability in libxlsv.1.6.2 allows a remote attacker to execute arbitrary code and cause a denial of service via a crafted XLS file to the xlsparseWorkBook function in xls.c:1018...

CVE-2026-59933 PhpSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In versions 4.0.0 through 5.8.0, 3.3.0 through 3.10.6, 2.2.0 through 2.4.6, 2.0.0 through 2.1.17, and all releases up to and including 1.30.5, the OLE reader follows sector chains from attacker-controlled XLS/OLE...

CVE-2026-59933 PhpSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion

PhpSpreadsheet is a pure PHP library for reading and writing spreadsheet files. In versions 4.0.0 through 5.8.0, 3.3.0 through 3.10.6, 2.2.0 through 2.4.6, 2.0.0 through 2.1.17, and all releases up to and including 1.30.5, the OLE reader follows sector chains from attacker-controlled XLS/OLE...

PHPSpreadsheet: XLS/OLE sector-chain self-loop causes memory exhaustion

Summary PhpSpreadsheet's OLE reader follows sector chains from attacker-controlled XLS/OLE metadata without detecting cycles or enforcing a maximum chain length. A tiny malformed .xls/OLE file can set the small-block depot sector chain to point back to itself. During normal XLS detection,...

CVE-2026-41034

ONLYOFFICE DocumentServer before 9.3.0 has an untrusted pointer dereference in XLS processing/conversion via pictFmla.cbBufInCtlStm and other vectors, leading to an information leak and ASLR bypass...

Linux Distros Unpatched Vulnerability : CVE-2026-26825

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggere...

CVE-2026-26825

A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggered by uninitialized heap memory originating from the OLE layer ole2read. The flaw is detectable with MemorySanitizer MSAN and can lead to...

CVE-2026-26824

libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table MSAT in readMSAT is not fully initialized before being consumed by ole2validatesectorchain, which may result in application crashe...

DEBIAN-CVE-2026-26824

libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table MSAT in readMSAT is not fully initialized before being consumed by ole2validatesectorchain, which may result in application crashe...

UBUNTU-CVE-2026-26825

A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggered by uninitialized heap memory originating from the OLE layer ole2read. The flaw is detectable with MemorySanitizer MSAN and can lead to...

CVE-2026-26824

libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table MSAT in readMSAT is not fully initialized before being consumed by ole2validatesectorchain, which may result in application crashe...

CVE-2026-26825

A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggered by uninitialized heap memory originating from the OLE layer ole2read. The flaw is detectable with MemorySanitizer MSAN and can lead to...

CVE-2026-26825

A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggered by uninitialized heap memory originating from the OLE layer ole2read. The flaw is detectable with MemorySanitizer MSAN and can lead to...

CVE-2026-26824

libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table MSAT in readMSAT is not fully initialized before being consumed by ole2validatesectorchain, which may result in application crashe...

CVE-2026-26824

libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table MSAT in readMSAT is not fully initialized before being consumed by ole2validatesectorchain, which may result in application crashe...

EUVD-2026-34179

A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggered by uninitialized heap memory originating from the OLE layer ole2read. The flaw is detectable with MemorySanitizer MSAN and can lead to...

CVE-2026-26825

A use-of-uninitialized memory vulnerability exists in libxls 1.6.3 when parsing malformed XLS files. The issue is reachable via xlsparseWorkBook and is triggered by uninitialized heap memory originating from the OLE layer ole2read. The flaw is detectable with MemorySanitizer MSAN and can lead to...