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An exploitable signed conversion vulnerability exists in the TextMaker document parsing functionality of SoftMaker Office 2021’s TextMaker application. A specially crafted document can cause the document parser to miscalculate a length used to allocate a buffer, later upon usage of this buffer the application will write outside its bounds resulting in a heap-based memory corruption. An attacker can entice the victim to open a document to trigger this vulnerability.

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无符号至有符号转换错误

Softmaker Office 缓冲区错误漏洞

Softmaker Office是德国Softmaker公司的一个支持多平台的办公软件。该软件用于文字处理，电子表格，演示文稿设计，还可以进行脚本编写，支持多种常见的Office文件格式，以及用户在执行必要工作时可以选择使用的多种内部格式。 SoftMaker Office 2021 存在安全漏洞，该漏洞源于TextMaker应用程序的TextMaker文档解析功能中存在可利用的签名转换，导致基于堆的内存损坏。

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