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openSUSE-SU-2021:3472-1

Опубликовано: 20 окт. 2021
Источник: suse-cvrf

Описание

Security update for flatpak

This update for flatpak fixes the following issues:

  • Update to version 1.10.5:
  • CVE-2021-41133: Fixed a bug that could lead to sandbox bypass via recent VFS-manipulating syscalls. (bsc#1191507)

Список пакетов

openSUSE Leap 15.3
flatpak-1.10.5-4.9.1
flatpak-devel-1.10.5-4.9.1
flatpak-zsh-completion-1.10.5-4.9.1
libflatpak0-1.10.5-4.9.1
system-user-flatpak-1.10.5-4.9.1
typelib-1_0-Flatpak-1_0-1.10.5-4.9.1

Описание

Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In versions prior to 1.10.4 and 1.12.0, Flatpak apps with direct access to AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can trick portals and other host-OS services into treating the Flatpak app as though it was an ordinary, non-sandboxed host-OS process. They can do this by manipulating the VFS using recent mount-related syscalls that are not blocked by Flatpak's denylist seccomp filter, in order to substitute a crafted `/.flatpak-info` or make that file disappear entirely. Flatpak apps that act as clients for AF_UNIX sockets such as those used by Wayland, Pipewire or pipewire-pulse can escalate the privileges that the corresponding services will believe the Flatpak app has. Note that protocols that operate entirely over the D-Bus session bus (user bus), system bus or accessibility bus are not affected by this. This is due to the use of a proxy process `xdg-dbus-proxy`, whose VFS cannot be manipulated by the Flatpak app, when interacting with these buses. Patches exist for versions 1.10.4 and 1.12.0, and as of time of publication, a patch for version 1.8.2 is being planned. There are no workarounds aside from upgrading to a patched version.


Затронутые продукты
openSUSE Leap 15.3:flatpak-1.10.5-4.9.1
openSUSE Leap 15.3:flatpak-devel-1.10.5-4.9.1
openSUSE Leap 15.3:flatpak-zsh-completion-1.10.5-4.9.1
openSUSE Leap 15.3:libflatpak0-1.10.5-4.9.1

Ссылки