Home/CVE/Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. Versions prior to 1
CVE

CVE-2023-28100

Flatpak is a system for building, distributing, and running sandboxed desktop applications on Linux. Versions prior to 1

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.

CRITICAL · CVSS 10 EPSS 0.00698
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

4
flatpak< 1.10.8
flatpak>= 1.12.0 and < 1.12.8
flatpak>= 1.14.0 and < 1.14.4
flatpak>= 1.15.0 and < 1.15.4
▣

Scoring & Timeline

10
CRITICAL · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD16 Mar 2023 · 04:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
yes
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

7
suse-csafopenSUSE-SU-2024:12800-1
suse-csafSUSE-SU-2023:1712-1
suse-csafSUSE-SU-2023:1713-1
suse-csafSUSE-SU-2023:1714-1
suse-csafSUSE-SU-2023:1715-1
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/flatpak/flatpak/commit/8e63de9a7d3124f91140fc74f8ca9ed73ed53be9Patch
https://github.com/flatpak/flatpak/security/advisories/GHSA-7qpw-3vjv-xrqpPatchVendor Advisory
https://marc.info/?l=oss-security&m=167879021709955&w=2Mailing List
https://security.gentoo.org/glsa/202312-12
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