Vulnerability CVE-2019-12439
Published: 2019-05-29

Description:
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.

Type:

CWE-20

 (Improper Input Validation)

CVSS2 => (AV:L/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.6/10
6.4/10
3.9/10
Exploit range
Attack complexity
Authentication
Local
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Projectatomic -> Bubblewrap 

 References:
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00028.html
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
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