Skip to content
Fencer Intel
high 7.4

CVE-2019-12439 json

bubblewrap.c in Bubblewrap before 0.3.3 misuses temporary directories in /tmp as a mount point.

published 7y ago modified 7d ago also EUVD-2019-4048

cvss
7.4
version 3.0, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.6%
EPSS 0.6% chance of exploitation in 30 days, percentile 47%
public exploits
0
none known

Summary

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.

Patch / fix

  • projectatomic bubblewrap 0.3.3
  • bubblewrap Debian 14, Debian 13, Debian 12 0.3.1-3

debian advisories DEBIAN-CVE-2019-12439

  • bubblewrap Ubuntu Pro 18.04 LTS 0.2.1-1ubuntu0.1+esm2

ubuntu advisories UBUNTU-CVE-2019-12439

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • cfme cloudforms managementengine 5.10 5.10.7.1-1.el7cf
  • bubblewrap cloudforms managementengine 5.10 0.3.3-2.el7at
  • cfme-gemset cloudforms managementengine 5.10 5.10.7.1-1.el7cf
  • ansible-tower cloudforms managementengine 5.10 3.5.0-1.el7at
  • ansible-runner cloudforms managementengine 5.10 1.3.4-2.el7ar
  • cfme-appliance cloudforms managementengine 5.10 5.10.7.1-1.el7cf
  • ansible-tower-ui cloudforms managementengine 5.10 3.5.0-1.el7at
  • ansible-tower-setup cloudforms managementengine 5.10 3.5.0-1.el7at

red hat advisories RHSA-2019:1833

  • bubblewrap SLE Module for Desktop Applications 15 0.2.0-3.3.1

suse advisories SUSE-SU-2019:1826-1

  • bubblewrap openSUSE Tumbleweed 0.5.0-1.1
  • bubblewrap openSUSE Leap 15.0 0.2.0-lp150.2.3.1
  • bubblewrap openSUSE Leap 15.1 0.3.3-lp151.2.3.1

opensuse advisories openSUSE-SU-2024:10663-1openSUSE-SU-2019:1721-1openSUSE-SU-2019:1535-1

Is CVE-2019-12439 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

Check with Fencer

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-12439 updated cvss 4.7

bubblewrap: temporary directory misuse as mount point

  • Red Hat Ansible Tower 3 bubblewrap Red Hat Enterprise Linux 8 bubblewrap
    affected: workaround, no fix available
  • Red Hat CloudForms Management Engine 5.10 cfme 5.10.7.1-1.el7cf, bubblewrap 0.3.3-2.el7at, ansible-tower 3.5.0-1.el7at, ansible-runner 1.3.4-2.el7ar, cfme-gemset 5.10.7.1-1.el7cf, ansible-tower-ui 3.5.0-1.el7at, +13 more
    fixed: vendor fix RHSA-2019:1833

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
no
Technical impact
partial
Assessed
7d ago

Exploit prediction

0.58% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.0 7.4 CVSS:3.0/AC:H/AV:L/A:H/C:H/I:H/PR:N/S:U/UI:N
CNA 3.0 7.4 CVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.0 7.8 CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.