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CVE-2023-28100

10.0 · CRITICAL

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

Published Mar 16, 2023CWE-20EPSS 0.87%

Overview

CVE-2023-28100 is a critical-severity vulnerability. It was published on March 16, 2023 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/flatpak/flatpak/commit/8e63de9a7d3124f91140fc74f8ca9ed73ed53be9GitHubgithub.com/flatpak/flatpak/security/advisories/GHSA-7qpw-3vjv-xrqpRefmarc.info/?l=oss-security&m=167879021709955&w=2Refsecurity.gentoo.org/glsa/202312-12GitHubgithub.com/flatpak/flatpak/commit/8e63de9a7d3124f91140fc74f8ca9ed73ed53be9GitHubgithub.com/flatpak/flatpak/security/advisories/GHSA-7qpw-3vjv-xrqpRefmarc.info/?l=oss-security&m=167879021709955&w=2Refsecurity.gentoo.org/glsa/202312-12

How CyberStrike helps

Frequently asked questions

What is CVE-2023-28100?

CVE-2023-28100 is a critical-severity vulnerability. It was published on March 16, 2023 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

How severe is CVE-2023-28100?

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-28100?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-28100?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-28100 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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