CVE-2023-28100: TIOCLINUX can send commands outside sandbox if running on a virtual console
First published: Thu Mar 16 2023(Updated: )
Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. Versions prior to 1.10.8, 1.12.8, 1.14.4, and 1.15.4 contain a vulnerability similar to CVE-2017-5226, but using the `TIOCLINUX` ioctl command instead of `TIOCSTI`. If a Flatpak app is run on a Linux virtual console such as `/dev/tty1`, it can copy text from the virtual console and paste it into the command buffer, from which the command might be run after the Flatpak app has exited. Ordinary graphical terminal emulators like xterm, gnome-terminal and Konsole are unaffected. This vulnerability is specific to the Linux virtual consoles `/dev/tty1`, `/dev/tty2` and so on. A patch is available in versions 1.10.8, 1.12.8, 1.14.4, and 1.15.4. As a workaround, don't run Flatpak on a Linux virtual console. Flatpak is primarily designed to be used in a Wayland or X11 graphical environment.
Credit: security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Flatpak Flatpak | <1.10.8 | |
| Flatpak Flatpak | >=1.12.0<1.12.8 | |
| Flatpak Flatpak | >=1.14.0<1.14.4 | |
| Flatpak Flatpak | >=1.15.0<1.15.4 |
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Reference Links
Frequently Asked Questions
What is CVE-2023-28100?
CVE-2023-28100 is a vulnerability in Flatpak, a system for building, distributing, and running sandboxed desktop applications on Linux.
How severe is the CVE-2023-28100 vulnerability?
The severity of CVE-2023-28100 is critical with a CVSS score of 6.5.
Which versions of Flatpak are affected by CVE-2023-28100?
Versions prior to 1.10.8, 1.12.8, 1.14.4, and 1.15.4 of Flatpak are affected by CVE-2023-28100.
What is the fix for CVE-2023-28100?
To fix CVE-2023-28100, it is recommended to upgrade to Flatpak versions 1.10.8, 1.12.8, 1.14.4, or 1.15.4.
Where can I find more information about CVE-2023-28100?
More information about CVE-2023-28100 can be found at the following references: [link1], [link2], [link3].
- collector/nvd-index
- agent/references
- agent/author
- agent/event
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- agent/last-modified-date
- agent/softwarecombine
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- collector/nvd-api
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- collector/mitre-cve
- source/MITRE
- vendor/flatpak
- canonical/flatpak flatpak
- version/flatpak flatpak/1.12.0
- version/flatpak flatpak/1.14.0
- version/flatpak flatpak/1.15.0