The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsUpgrade Amazon-Linux:2
flatpak-devel
to version 0:1.0.9-10.amzn2.0.1 or higher.
This issue was patched in ALAS2-2021-1625
.
Note: Versions mentioned in the description apply only to the upstream flatpak-devel
package and not the flatpak-devel
package as distributed by Amazon-Linux
.
See How to fix?
for Amazon-Linux:2
relevant fixed versions and status.
Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. In Flatpack since version 0.9.4 and before version 1.10.2 has a vulnerability in the "file forwarding" feature which can be used by an attacker to gain access to files that would not ordinarily be allowed by the app's permissions. By putting the special tokens @@
and/or @@u
in the Exec field of a Flatpak app's .desktop file, a malicious app publisher can trick flatpak into behaving as though the user had chosen to open a target file with their Flatpak app, which automatically makes that file available to the Flatpak app. This is fixed in version 1.10.2. A minimal solution is the first commit "Disallow @@ and @@U usage in desktop files
". The follow-up commits "dir: Reserve the whole @@ prefix
" and "dir: Refuse to export .desktop files with suspicious uses of @@ tokens
" are recommended, but not strictly required. As a workaround, avoid installing Flatpak apps from untrusted sources, or check the contents of the exported .desktop
files in exports/share/applications/*.desktop
(typically ~/.local/share/flatpak/exports/share/applications/*.desktop
and /var/lib/flatpak/exports/share/applications/*.desktop
) to make sure that literal filenames do not follow @@
or @@u
.