Security features bypass in Flatpak - CVE-2019-10063

Vulnerability identifier: #VU32022

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2019-10063

CWE-ID: CWE-254

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a malicious application to bypass implemented security restrictions.

The vulnerability exists due to improper input validation. If Flatpak runs from a terminal emulator containing an interactive shell, a malicious Flatpak app could inject input into the interactive shell by using the TIOCSTI ioctl.

Flatpak
Arch Linux
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for IBM System z (Structure A)
Red Hat Enterprise Linux for Power 9
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux Server - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux for x86_64
openEuler
flatpak (Alpine package)
flatpak (Red Hat package)
flatpak
flatpak-debuginfo
flatpak-devel
flatpak-debugsource
flatpak-help

Install update from vendor's website.

Flatpak - addressed in versions 1.0.8, 1.2.4, 1.3.1
flatpak (Alpine package) - update to 1.0.8-r0
flatpak (Red Hat package) - addressed in versions 1.0.2-5.el7_6, 1.0.6-3.el8_0
flatpak - update to 1.0.3-6
flatpak-debuginfo - update to 1.0.3-6
flatpak-devel - update to 1.0.3-6
flatpak-debugsource - update to 1.0.3-6
flatpak-help - update to 1.0.3-6

• https://access.redhat.com/errata/RHSA-2019:1024
• https://access.redhat.com/errata/RHSA-2019:1143
• https://github.com/flatpak/flatpak/issues/2782
• https://github.com/flatpak/flatpak/security/advisories/GHSA-7gfv-rvfx-h87x
• https://github.com/flatpak/flatpak/security/advisories/GHSA-5mm6-ffvm-prvg

• Multiple vulnerabilities in flatpak
• Input validation error in flatpak (Alpine package)
• Arch Linux update for nautilus
• openEuler update for flatpak
• Red Hat Enterprise Linux 7 update for flatpak
• Red Hat Enterprise Linux 8 update for flatpak