[USN-5141-1] Firejail vulnerability
steve.beattie at canonical.com
Thu Nov 11 07:58:29 UTC 2021
Ubuntu Security Notice USN-5141-1
November 11, 2021
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 20.04 LTS
Firejail could be made to overwrite files as the administrator.
- firejail: Application sandbox
Roman Fiedler discovered that a race condition existed in Firejail
when using OverlayFS to prevent writes to the underlying file system. A
local attacker could use this to gain administrative privileges. Note:
this update disables support for OverlayFS in Firejail.
The problem can be corrected by updating your system to the following
Ubuntu 20.04 LTS:
In general, a standard system update will make all the necessary changes.
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