QID 354489

Date Published: 2022-12-21

QID 354489: Amazon Linux Security Advisory for flatpak : ALAS2022-2022-021

An incorrect authorization vulnerability was found in flatpak.
Flatpak does not 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.
This issue allows apps to grant themselves permissions without the user's consent. (
( CVE-2021-43860) a path traversal vulnerability was found in flatpak.
This happens when 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. (
( CVE-2022-21682)



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation of this vulnerability could lead to a securitybreach or could affect integrity, availability, and confidentiality.

  • CVSS V3 rated as Critical - 8.6 severity.
  • CVSS V2 rated as High - 6.8 severity.
    • Solution
    Please refer to Amazon advisory: ALAS2022-2022-021 for affected packages and patching details, or update with your package manager.
    Vendor References

    CVEs related to QID 354489

    CVE-2022-21682 | CVE-2021-43860 |
    Software Advisories
    Advisory ID Software Component Link
    ALAS2022-2022-021 amazon linux 2022 URL Logo alas.aws.amazon.com/AL2022/ALAS-2022-021.html
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