Improper Input Validation Affecting bubblewrap package, versions <0.3.1-3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published27 Aug 2026
- disclosed29 May 2019
Introduced: 29 May 2019
CVE-2019-12439 (opens in a new tab)How to fix?
Upgrade Echo:latest bubblewrap to version 0.3.1-3 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream bubblewrap package and not the bubblewrap package as distributed by Echo.
See How to fix? for Echo:latest relevant fixed versions and status.
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.
References
- https://advisory.echohq.com/cve/CVE-2019-12439
- 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
- https://security.gentoo.org/glsa/202006-18