CVE-2022-21688— OnionShare 缓冲区错误漏洞

Out-of-bounds Read in Onionshare

OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network. Affected versions of the desktop application were found to be vulnerable to denial of service via an undisclosed vulnerability in the QT image parsing. Roughly 20 bytes lead to 2GB memory consumption and this can be triggered multiple times. To be abused, this vulnerability requires rendering in the history tab, so some user interaction is required. An adversary with knowledge of the Onion service address in public mode or with authentication in private mode can perform a Denial of Service attack, which quickly results in out-of-memory for the server. This requires the desktop application with rendered history, therefore the impact is only elevated. This issue has been patched in version 2.5.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

跨界内存读

OnionShare 缓冲区错误漏洞

OnionShare是一种开源工具。用于安全且匿名地共享文件、托管网站以及使用 Tor 网络与朋友聊天。 OnionShare存在安全漏洞，该漏洞源于受影响的桌面应用程序版本被发现容易通过QT图像解析中的一个未公开的漏洞来拒绝服务。大约20个字节会导致2GB的内存消耗，这可以被多次触发。要被滥用，这个漏洞需要在历史选项卡中呈现，因此需要一些用户交互。

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