漏洞信息
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Vulnerability Title
N/A
Vulnerability Description
In Flatpak before 1.18.1, a malicious sandboxed app can obtain arbitrary read and write access to files on the host, which can be escalated to arbitrary code execution on the host, a different vulnerability than CVE-2026-76925. Flatpak creates a few app data directories (e.g., /var/cache, /var/data, /var/config, and /var/tmp) in every sandbox on every app launch where, in some cases, components of the path are attacker-controlled. Missing symlink protection can redirect the directories. Some of these directories are bind-mounted by Flatpak by passing the path (e.g., /home/user/.var/app/APP_ID/cache/tmp), which contains attacker-controlled directories (tmp) to bwrap --bind SRC DST. bwrap passes the path on to the kernel, which then follows symlinks. A malicious symlink can point to arbitrary locations on the host and it will become mounted inside the sandbox.
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Vulnerability Type
CWE-61
Vulnerability Title
Flatpak 后置链接漏洞
Vulnerability Description
Flatpak是Flatpak组织开源的一个用于在Linux上构建、分发和运行沙盒桌面应用程序的系统。 Flatpak 1.18.1之前版本存在后置链接漏洞,该漏洞源于缺少符号链接保护,恶意沙盒应用可通过对受攻击者控制的路径目录进行绑定挂载,导致对主机文件的任意读写,并可能提升为在主机上执行任意代码。
CVSS Information
N/A
Vulnerability Type
N/A