The version of flatpak installed on the remote host is prior to 1.0.9-10. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2024-2518 advisory.

  - Flatpak is a Linux application sandboxing and distribution framework. Prior to versions 1.12.3 and 1.10.6,     Flatpak doesn't properly validate that the permissions displayed to the user for an app at install time     match the actual permissions granted to the app at runtime, in the case that there's a null byte in the     metadata file of an app. Therefore apps can grant themselves permissions without the consent of the user.
    Flatpak shows permissions to the user during install by reading them from the xa.metadata key in the     commit metadata. This cannot contain a null terminator, because it is an untrusted GVariant. Flatpak     compares these permissions to the *actual* metadata, from the metadata file to ensure it wasn't lied to.
    However, the actual metadata contents are loaded in several places where they are read as simple C-style     strings. That means that, if the metadata file includes a null terminator, only the content of the file     from *before* the terminator gets compared to xa.metadata. Thus, any permissions that appear in the     metadata file after a null terminator are applied at runtime but not shown to the user. So maliciously     crafted apps can give themselves hidden permissions. Users who have Flatpaks installed from untrusted     sources are at risk in case the Flatpak has a maliciously crafted metadata file, either initially or in an     update. This issue is patched in versions 1.12.3 and 1.10.6. As a workaround, users can manually check the     permissions of installed apps by checking the metadata file or the xa.metadata key on the commit metadata.
    (CVE-2021-43860)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Detections

Analytics

Amazon Linux 2 : flatpak (ALAS-2024-2518)

high Nessus Plugin ID 193525

Version 1.0