CVSS 6.5 · Medium EPSS 1,7%
Kerentanan Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') pada flatpak, flatpak-builder +3 lainnya. Skor CVSS 3.1 6.5 (Medium) menurut NVD.
Flatpak is a Linux application sandboxing and distribution framework. A path traversal vulnerability affects versions of Flatpak prior to 1.12.3 and 1.10.6. flatpak-builder applies `finish-args` last in the build. At this point the build directory will have the full access that is specified in the manifest, so running `flatpak build` against it will gain those permissions. Normally this will not be done, so this is not problem. However, if `--mirror-screenshots-url` is specified, then flatpak-builder will launch `flatpak build --nofilesystem=host appstream-utils mirror-screenshots` after finalization, which can lead to issues even with the `--nofilesystem=host` protection. In normal use, the only issue is that these empty directories can be created wherever the user has write permissions. However, a malicious application could replace the `appstream-util` binary and potentially do something more hostile. This has been resolved in Flatpak 1.12.3 and 1.10.6 by changing the behaviour of `--nofilesystem=home` and `--nofilesystem=host`.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
· uraikan di kalkulator | Vendor | Produk | Versi terdampak |
|---|---|---|
| flatpak | flatpak | Semua versi sebelum 1.10.7 |
| flatpak | flatpak | Versi 1.11.1 hingga sebelum 1.12.4 |
| flatpak | flatpak-builder | Semua versi sebelum 1.2.2 |
| fedoraproject | fedora | Versi 35 |
| redhat | enterprise linux | Versi 8.0 |
| debian | debian linux | Versi 9.0 |
| debian | debian linux | Versi 10.0 |
| debian | debian linux | Versi 11.0 |