bubblewrap: temporary directory misuse as mount point
Published May 29, 2019
7.8
HIGHCVSS 3.0
EPSS 0.57%
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.
Affected products
No data.
- < 0.3.3
No data.
CloudForms Management Engine 5.10
ansible-runner-0:1.3.4-2.el7ar
Fixed · RHSA-2019:1833
CloudForms Management Engine 5.10
ansible-tower-0:3.5.0-1.el7at
Fixed · RHSA-2019:1833
CloudForms Management Engine 5.10
bubblewrap-0:0.3.3-2.el7at
Fixed · RHSA-2019:1833
CloudForms Management Engine 5.10
cfme-0:5.10.7.1-1.el7cf
Fixed · RHSA-2019:1833
CloudForms Management Engine 5.10
cfme-amazon-smartstate-0:5.10.7.1-1.el7cf
Fixed · RHSA-2019:1833
CloudForms Management Engine 5.10
cfme-appliance-0:5.10.7.1-1.el7cf
Fixed · RHSA-2019:1833
CloudForms Management Engine 5.10
cfme-gemset-0:5.10.7.1-1.el7cf
Fixed · RHSA-2019:1833
CloudForms Management Engine 5.10
ovirt-ansible-hosted-engine-setup-0:1.0.20-1.el7ev
Fixed · RHSA-2019:1833
CloudForms Management Engine 5.10
ovirt-ansible-image-template-0:1.1.11-1.el7ev
Fixed · RHSA-2019:1833
CloudForms Management Engine 5.10
ovirt-ansible-manageiq-0:1.1.14-1.el7ev
Fixed · RHSA-2019:1833
CloudForms Management Engine 5.10
ovirt-ansible-vm-infra-0:1.1.18-1.el7ev
Fixed · RHSA-2019:1833
Red Hat Ansible Tower 3
bubblewrap
Affected
Red Hat Enterprise Linux 8
bubblewrap
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| CloudForms Management Engine 5.10 | ansible-runner-0:1.3.4-2.el7ar | Fixed | RHSA-2019:1833 |
| CloudForms Management Engine 5.10 | ansible-tower-0:3.5.0-1.el7at | Fixed | RHSA-2019:1833 |
| CloudForms Management Engine 5.10 | bubblewrap-0:0.3.3-2.el7at | Fixed | RHSA-2019:1833 |
| CloudForms Management Engine 5.10 | cfme-0:5.10.7.1-1.el7cf | Fixed | RHSA-2019:1833 |
| CloudForms Management Engine 5.10 | cfme-amazon-smartstate-0:5.10.7.1-1.el7cf | Fixed | RHSA-2019:1833 |
| CloudForms Management Engine 5.10 | cfme-appliance-0:5.10.7.1-1.el7cf | Fixed | RHSA-2019:1833 |
| CloudForms Management Engine 5.10 | cfme-gemset-0:5.10.7.1-1.el7cf | Fixed | RHSA-2019:1833 |
| CloudForms Management Engine 5.10 | ovirt-ansible-hosted-engine-setup-0:1.0.20-1.el7ev | Fixed | RHSA-2019:1833 |
| CloudForms Management Engine 5.10 | ovirt-ansible-image-template-0:1.1.11-1.el7ev | Fixed | RHSA-2019:1833 |
| CloudForms Management Engine 5.10 | ovirt-ansible-manageiq-0:1.1.14-1.el7ev | Fixed | RHSA-2019:1833 |
| CloudForms Management Engine 5.10 | ovirt-ansible-vm-infra-0:1.1.18-1.el7ev | Fixed | RHSA-2019:1833 |
| Red Hat Ansible Tower 3 | bubblewrap | Affected | n/a |
| Red Hat Enterprise Linux 8 | bubblewrap | Affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This flaw requires a local user account to exploit. Since local users without root privileges are not supported on Red Had CloudForms, or on Red Hat Ansible Tower, this vulnerability is rated Low severity on these products. Future updates may address this vulnerability.
Red Hat mitigation
The default setting of `fs.protected_symlinks = 1` prevents any Confidentiality or Integrity impact from exploiting this vulnerability, reducing its rating to Low severity (4.7/CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H).
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2 other sources (MITRE, Red Hat) ▾
CVSS:3.0/AC:H/AV:L/A:H/C:H/I:H/PR:N/S:U/UI:N
CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
AV:L/AC:L/Au:N/C:P/I:P/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.57% (0.00575) | 45.41th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.49% (0.00494) | 38.31th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.08% (0.00083) | 21.97th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.04% (0.00042) | 5.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.04% (0.00042) | 5.63th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.61% (0.01606) | 75.68th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.61% (0.01606) | 75.63th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.61% (0.01606) | 73.59th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.80% (0.05802) | 77.29th | v2 (v2022.01.01) |
| Feb 3, 2022 | 7.39% (0.07386) | 83.89th | v1 |
| Jan 6, 2022 | 7.39% (0.07386) | 83.73th | v1 |
| Sep 1, 2021 | 1.75% (0.01746) | 74.14th | v1 |
| Apr 14, 2021 | 1.75% (0.01746) | 0.00th | v1 |
References (11)
- http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00028.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00015.html vendor-advisoryx_refsource_SUSE
- https://access.redhat.com/errata/RHSA-2019:1833 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2019-12439 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1695963 x_refsource_MISCIssue TrackingThird Party Advisory
- https://github.com/projectatomic/bubblewrap/commit/efc89e3b939b4bde42c10f065f6b7b02958ed50e x_refsource_MISCPatchThird Party Advisory
- https://github.com/projectatomic/bubblewrap/issues/304 x_refsource_MISCThird Party Advisory
- https://github.com/projectatomic/bubblewrap/releases/tag/v0.3.3 x_refsource_MISCRelease NotesThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2019-12439
- https://security.gentoo.org/glsa/202006-18 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2019-12439
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00028.html | vendor-advisoryx_refsource_SUSE | |
| http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00015.html | vendor-advisoryx_refsource_SUSE | |
| https://access.redhat.com/errata/RHSA-2019:1833 | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2019-12439 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1695963 | x_refsource_MISCIssue TrackingThird Party Advisory | |
| https://github.com/projectatomic/bubblewrap/commit/efc89e3b939b4bde42c10f065f6b7b02958ed50e | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/projectatomic/bubblewrap/issues/304 | x_refsource_MISCThird Party Advisory | |
| https://github.com/projectatomic/bubblewrap/releases/tag/v0.3.3 | x_refsource_MISCRelease NotesThird Party Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2019-12439 | ||
| https://security.gentoo.org/glsa/202006-18 | vendor-advisoryx_refsource_GENTOO | |
| https://www.cve.org/CVERecord?id=CVE-2019-12439 |
Change history (0)
No recorded changes yet.