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CVE-2023-28100— TIOCLINUX can send commands outside sandbox if running on a virtual console

Quick assessment

Affected
flatpak flatpak
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Flatpak是一套用于Linux桌面应用计算机环境的应用程序虚拟化系统。 Flatpak 1.10.8之前版本、1.12.x版本至1.12.8版本、1.14.x版本至1.14.4版本、1.15.x版本至1.15.4版本存在输入验证错误漏洞。攻击者利用该漏洞从虚拟控制台复制文本并将其粘贴到命令缓冲区中，在Flatpak应用程序退出后可能会从中运行命令。

CVSS 10.0 · Critical EPSS 0.87% · P58

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2023-28100

Vulnerability Information
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Vulnerability Title
TIOCLINUX can send commands outside sandbox if running on a virtual console
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Flatpak 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Flatpak是一套用于Linux桌面应用计算机环境的应用程序虚拟化系统。 Flatpak 1.10.8之前版本、1.12.x版本至1.12.8版本、1.14.x版本至1.14.4版本、1.15.x版本至1.15.4版本存在输入验证错误漏洞。攻击者利用该漏洞从虚拟控制台复制文本并将其粘贴到命令缓冲区中，在Flatpak应用程序退出后可能会从中运行命令。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
flatpak flatpak < 1.10.8 -

II. Public POCs for CVE-2023-28100

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III. Intelligence Information for CVE-2023-28100

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Patches & Fixes for CVE-2023-28100 (1)

Vendor Advisories for CVE-2023-28100 (2)

Mailing List Discussions for CVE-2023-28100 (1)

IV. Related Vulnerabilities

Same product: flatpak
Same vendor: flatpak
Same weakness: CWE-20

V. Comments for CVE-2023-28100

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