Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Flatpak | Flatpak | < 1.10.9 |
| Fedoraproject | Fedora | 39 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2024/04/18/5Mailing ListThird Party Advisory
- https://github.com/flatpak/flatpak/commit/72016e3fce8fcbeab707daf4f1a02b931fcc00Patch
- https://github.com/flatpak/flatpak/commit/81abe2a37d363f5099c3d0bdcd0caad6efc5bfPatch
- https://github.com/flatpak/flatpak/commit/b7c1a558e58aaeb1d007d29529bbb270dc4ff1Patch
- https://github.com/flatpak/flatpak/commit/bbab7ed1e672356d1a78b422462b210e8e8759Patch
- https://github.com/flatpak/flatpak/security/advisories/GHSA-phv6-cpc2-2fgjVendor Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing List
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing List
- http://www.openwall.com/lists/oss-security/2024/04/18/5Mailing ListThird Party Advisory
- https://github.com/flatpak/flatpak/commit/72016e3fce8fcbeab707daf4f1a02b931fcc00Patch
- https://github.com/flatpak/flatpak/commit/81abe2a37d363f5099c3d0bdcd0caad6efc5bfPatch
- https://github.com/flatpak/flatpak/commit/b7c1a558e58aaeb1d007d29529bbb270dc4ff1Patch
- https://github.com/flatpak/flatpak/commit/bbab7ed1e672356d1a78b422462b210e8e8759Patch
- https://github.com/flatpak/flatpak/security/advisories/GHSA-phv6-cpc2-2fgjVendor Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing List
FAQ
What is CVE-2024-32462?
CVE-2024-32462 is a vulnerability with a CVSS score of 8.4 (HIGH). 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...
How severe is CVE-2024-32462?
CVE-2024-32462 has been rated HIGH with a CVSS base score of 8.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-32462?
Check the references section above for vendor advisories and patch information. Affected products include: Flatpak Flatpak, Fedoraproject Fedora.