DSA-4830-1 flatpak -- 安全更新
- 在 Mitre's CVE 的目录中: CVE-2021-21261.
Simon McVittie 在flatpak门户服务中发现了一个bug，它允许沙盒应用程序在主机系统上执行任意代码（沙盒逃脱）。
The Flatpak portal D-Bus service (flatpak-portal, also known by its D-Bus service name org.freedesktop.portal.Flatpak) allows apps in a Flatpak sandbox to launch their own subprocesses in a new sandbox instance, either with the same security settings as the caller or with more restrictive security settings. For example, this is used in Flatpak-packaged web browsers such as Chromium to launch subprocesses that will process untrusted web content, and give those subprocesses a more restrictive sandbox than the browser itself。
In vulnerable versions, the Flatpak portal service passes caller-specified environment variables to non-sandboxed processes on the host system, and in particular to the flatpak run command that is used to launch the new sandbox instance. A malicious or compromised Flatpak app could set environment variables that are trusted by the flatpak run command, and use them to execute arbitrary code that is not in a sandbox。
我们建议您升级您的 flatpak 软件包。
查看关于 flatpak 的详细信息，请访问其安全追踪页面 https://security-tracker.debian.org/tracker/flatpak。