glusterfs: I/O to arbitrary devices on storage server
Published Sep 4, 2018
8.1
HIGHCVSS 3.1
EPSS 1.67%
Description
It was found that the "mknod" call derived from mknod(2) can create files pointing to devices on a glusterfs server node. An authenticated attacker could use this to create an arbitrary device and read data from any device attached to the glusterfs server node.
Affected products
Configuration 1
Configuration 2
- 4.0
- 8.0
- 9.0
- 6.0
- 7.0
No data.
Native Client for RHEL 6 for Red Hat Storage
glusterfs-0:3.12.2-18.el6
Fixed · RHSA-2018:2608
Native Client for RHEL 7 for Red Hat Storage
glusterfs-0:3.12.2-18.el7
Fixed · RHSA-2018:2607
Red Hat Gluster Storage 3.4 for RHEL 6
glusterfs-0:3.12.2-18.el6rhs
Fixed · RHSA-2018:2608
Red Hat Gluster Storage 3.4 for RHEL 6
redhat-release-server-0:6Server-6.10.0.24.el6rhs
Fixed · RHSA-2018:2608
Red Hat Gluster Storage 3.4 for RHEL 6
redhat-storage-server-0:3.4.0.0-1.el6rhs
Fixed · RHSA-2018:2608
Red Hat Gluster Storage 3.4 for RHEL 7
glusterfs-0:3.12.2-18.el7rhgs
Fixed · RHSA-2018:2607
Red Hat Gluster Storage 3.4 for RHEL 7
redhat-release-server-0:7.5-11.el7rhgs
Fixed · RHSA-2018:2607
Red Hat Gluster Storage 3.4 for RHEL 7
redhat-storage-server-0:3.4.0.0-1.el7rhgs
Fixed · RHSA-2018:2607
Red Hat Virtualization 4 for Red Hat Enterprise Linux 7
glusterfs-0:3.12.2-18.el7
Fixed · RHSA-2018:2607
Red Hat Virtualization 4 for Red Hat Enterprise Linux 7
imgbased-0:1.0.29-1.el7ev
Fixed · RHSA-2018:3470
Red Hat Virtualization 4 for Red Hat Enterprise Linux 7
redhat-release-virtualization-host-0:4.2-7.3.el7
Fixed · RHSA-2018:3470
Red Hat Virtualization 4 for Red Hat Enterprise Linux 7
redhat-virtualization-host-0:4.2-20181026.0.el7_6
Fixed · RHSA-2018:3470
Red Hat Enterprise Linux 6
glusterfs
Not affected
Red Hat Enterprise Linux 7
glusterfs
Not affected
Red Hat Enterprise Linux 8
glusterfs
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Native Client for RHEL 6 for Red Hat Storage | glusterfs-0:3.12.2-18.el6 | Fixed | RHSA-2018:2608 |
| Native Client for RHEL 7 for Red Hat Storage | glusterfs-0:3.12.2-18.el7 | Fixed | RHSA-2018:2607 |
| Red Hat Gluster Storage 3.4 for RHEL 6 | glusterfs-0:3.12.2-18.el6rhs | Fixed | RHSA-2018:2608 |
| Red Hat Gluster Storage 3.4 for RHEL 6 | redhat-release-server-0:6Server-6.10.0.24.el6rhs | Fixed | RHSA-2018:2608 |
| Red Hat Gluster Storage 3.4 for RHEL 6 | redhat-storage-server-0:3.4.0.0-1.el6rhs | Fixed | RHSA-2018:2608 |
| Red Hat Gluster Storage 3.4 for RHEL 7 | glusterfs-0:3.12.2-18.el7rhgs | Fixed | RHSA-2018:2607 |
| Red Hat Gluster Storage 3.4 for RHEL 7 | redhat-release-server-0:7.5-11.el7rhgs | Fixed | RHSA-2018:2607 |
| Red Hat Gluster Storage 3.4 for RHEL 7 | redhat-storage-server-0:3.4.0.0-1.el7rhgs | Fixed | RHSA-2018:2607 |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | glusterfs-0:3.12.2-18.el7 | Fixed | RHSA-2018:2607 |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | imgbased-0:1.0.29-1.el7ev | Fixed | RHSA-2018:3470 |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | redhat-release-virtualization-host-0:4.2-7.3.el7 | Fixed | RHSA-2018:3470 |
| Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 | redhat-virtualization-host-0:4.2-20181026.0.el7_6 | Fixed | RHSA-2018:3470 |
| Red Hat Enterprise Linux 6 | glusterfs | Not affected | n/a |
| Red Hat Enterprise Linux 7 | glusterfs | Not affected | n/a |
| Red Hat Enterprise Linux 8 | glusterfs | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect Red Hat Enterprise Linux 6 and 7 as the flaw is present in glusterfs-server, which is not shipped there. This flaw affects glusterfs versions included in Red Hat Virtualization 4 Hypervisor. However, in recommended configurations, the vulnerability is only exposed to hypervisor administrators and can not be exploited from virtual machines or other hosts on the network. For Red Hat Virtualization, Product Security has rated this flaw as Moderate. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
Red Hat mitigation
To limit exposure of gluster server nodes : 1. gluster server should be on LAN and not reachable from public networks. 2. Use gluster auth.allow and auth.reject. 3. Use TLS certificates to authenticate gluster clients. caveat: This does not protect from attacks by authenticated gluster clients.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L
AV:N/AC:L/Au:S/C:P/I:P/A:N
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 v5
- EPSS v2
- EPSS v3
- EPSS v4
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
- EPSS v4
Table of values (17 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.67% (0.01672) | 75.96th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.67% (0.01672) | 73.71th | v5 (v2026.06.15) |
| Mar 30, 2025 | 0.85% (0.00846) | 72.71th | v4 (v2025.03.14) |
| Mar 29, 2025 | 1.89% (0.01892) | 72.21th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.85% (0.00846) | 73.22th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.17% (0.00173) | 55.71th | v3 (v2023.03.01) |
| Jun 19, 2024 | 0.17% (0.00173) | 54.55th | v3 (v2023.03.01) |
| Apr 23, 2024 | 0.24% (0.00240) | 61.67th | v3 (v2023.03.01) |
| Mar 6, 2024 | 0.34% (0.00341) | 70.81th | v3 (v2023.03.01) |
| Feb 17, 2024 | 0.40% (0.00404) | 73.06th | v3 (v2023.03.01) |
| Jan 26, 2024 | 0.40% (0.00404) | 71.06th | v3 (v2023.03.01) |
| Sep 3, 2023 | 0.29% (0.00285) | 64.68th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.22% (0.00217) | 57.85th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.10% (0.01104) | 54.09th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.10% (0.01104) | 28.85th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.86% (0.01865) | 48.06th | v5 (v2026.06.15) |
| Apr 14, 2021 | 1.66% (0.01659) | 0.00th | v1 |
References (12)
- http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00035.html vendor-advisoryx_refsource_SUSEMailing ListThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2607 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:2608 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3470 vendor-advisoryx_refsource_REDHATThird Party Advisory
- https://access.redhat.com/security/cve/CVE-2018-10923 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1610659 Issue Tracking
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10923 x_refsource_CONFIRMIssue TrackingMitigation
- https://lists.debian.org/debian-lts-announce/2018/09/msg00021.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/11/msg00000.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-10923
- https://security.gentoo.org/glsa/201904-06 vendor-advisoryx_refsource_GENTOOThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2018-10923
Change history (0)
No recorded changes yet.