Summary
Package updates are available for Amazon Linux 2023 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 11
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | flatpak | 0:1.15.4-3.amzn2023.0.2 |
| Amazon Linux · 2023 | flatpak-debuginfo | 0:1.15.4-3.amzn2023.0.2 |
| Amazon Linux · 2023 | flatpak-debugsource | 0:1.15.4-3.amzn2023.0.2 |
| Amazon Linux · 2023 | flatpak-devel | 0:1.15.4-3.amzn2023.0.2 |
| Amazon Linux · 2023 | flatpak-libs | 0:1.15.4-3.amzn2023.0.2 |
| Amazon Linux · 2023 | flatpak-libs-debuginfo | 0:1.15.4-3.amzn2023.0.2 |
| Amazon Linux · 2023 | flatpak-selinux | 0:1.15.4-3.amzn2023.0.2 |
| Amazon Linux · 2023 | flatpak-session-helper | 0:1.15.4-3.amzn2023.0.2 |
| Amazon Linux · 2023 | flatpak-session-helper-debuginfo | 0:1.15.4-3.amzn2023.0.2 |
| Amazon Linux · 2023 | flatpak-tests | 0:1.15.4-3.amzn2023.0.2 |
| Amazon Linux · 2023 | flatpak-tests-debuginfo | 0:1.15.4-3.amzn2023.0.2 |
Vulnerabilities 1
-
High 8.4CVE-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