#VU66718 Permissions, Privileges, and Access Controls in Flatpak and ostree
Published: August 23, 2022
Vulnerability identifier: #VU66718
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: N/A
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Flatpak
ostree
Flatpak
ostree
Software vendor:
Flatpak
OSTree Project
Flatpak
OSTree Project
Description
The vulnerability allows a local user to delete arbitrary files on the system.
The vulnerability exists due to usage of an old version of libostree, which lacks filtration of ref (branch) names. A local user can force the latpak-system-helper service to delete arbitrary files by requesting deletion of a crafted ref (branch) name.
Remediation
Install updates from vendor's website.