bubblewrap.c in Bubblewrap before 0.3.3 misuses temporary directories in /tmp as a mount point. In some particular configurations (related to XDG_RUNTIME_DIR), a local attacker may abuse this flaw to prevent other users from executing bubblewrap or potentially execute code.
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00028.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00015.html
https://access.redhat.com/errata/RHSA-2019:1833
https://bugzilla.redhat.com/show_bug.cgi?id=1695963
https://github.com/projectatomic/bubblewrap/commit/efc89e3b939b4bde42c10f065f6b7b02958ed50e
https://github.com/projectatomic/bubblewrap/issues/304
https://github.com/projectatomic/bubblewrap/releases/tag/v0.3.3
Source: MITRE
Published: 2019-05-29
Updated: 2020-06-15
Type: CWE-20
Base Score: 4.6
Vector: AV:L/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 3.9
Severity: MEDIUM
Base Score: 7.8
Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH