CVE-2019-12439 — bubblewrap
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.
Published
2019-05-29T14:42:08.000Z
Last modified
2024-08-04T23:17:40.131Z
CVSS vector
CVSS:3.0/AC:H/AV:L/A:H/C:H/I:H/PR:N/S:U/UI:N
01What is this vulnerability?
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.
02Affected products
| Vendor | Product | Versions |
|---|
| n | a / n/a | n/a |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2019-05-29T14:42:08.000Z
- Last modified: 2024-08-04T23:17:40.131Z
09References
- github.com — https://github.com/projectatomic/bubblewrap/issues/304
- github.com — https://github.com/projectatomic/bubblewrap/commit/efc89e3b939b4bde42c10f065f6b7…
- bugzilla.redhat.com — https://bugzilla.redhat.com/show_bug.cgi?id=1695963
- github.com — https://github.com/projectatomic/bubblewrap/releases/tag/v0.3.3
- lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00028.html
- lists.opensuse.org — http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00015.html
- access.redhat.com — https://access.redhat.com/errata/RHSA-2019:1833
- security.gentoo.org — https://security.gentoo.org/glsa/202006-18
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