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High ALAS2-2024-2538 1 CVE

Important: flatpak security update (Amazon Linux 2)

Published May 9, 2024 · Updated May 15, 2024

Summary

Package updates are available for Amazon Linux 2 that fix the following vulnerabilities: CVE-2024-32462: Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. in versions before 1.10.9, 1.12.9, 1.14.6, and 1.15.8, a malicious or compromised Flatpak app could execute arbitrary code outside its sandbox. Normally, the `--command` argument of `flatpak run` expects to be given a command to run in the specified Flatpak app, optionally along with some arguments. However it is possible to instead pass `bwrap` arguments to `--command=`, such as `--bind`. It's possible to pass an arbitrary `commandline` to the portal interface `org.freedesktop.portal.Background.RequestBackground` from within a Flatpak app. When this is converted into a `--command` and arguments, it achieves the same effect of passing arguments directly to `bwrap`, and thus can be used for a sandbox escape. The solution is to pass the `--` argument to `bwrap`, which makes it stop processing options. This has been supported since bubblewrap 0.3.0. All supported versions of Flatpak require at least that version of bubblewrap. xdg-desktop-portal version 1.18.4 will mitigate this vulnerability by only allowing Flatpak apps to create .desktop files for commands that do not start with --. The vulnerability is patched in 1.15.8, 1.10.9, 1.12.9, and 1.14.6.

Fixed packages 5

ReleasePackageFixed in
Amazon Linux · 2 flatpak 0:1.0.9-10.amzn2.0.5
Amazon Linux · 2 flatpak-builder 0:1.0.0-10.amzn2.0.5
Amazon Linux · 2 flatpak-debuginfo 0:1.0.9-10.amzn2.0.5
Amazon Linux · 2 flatpak-devel 0:1.0.9-10.amzn2.0.5
Amazon Linux · 2 flatpak-libs 0:1.0.9-10.amzn2.0.5

Vulnerabilities 1

  • High 8.4
    CVE-2024-32462 Public exploit

    Flatpak vulnerable to a sandbox escape via RequestBackground portal due to bad argument parsing

    Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. in versions before 1.10.9, 1.12.9, 1.14.6, and 1.15.8, a malicious or compromised Flatpak app could execute arbitrary code outside its sandbox. Normally, the …

References

  • web
    https://alas.aws.amazon.com/cve/html/CVE-2024-32462.html