CVE-2018-10923

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-09-04 · updated 2026-06-17
Weakness: CWE-20

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

Debian Linux: 8.0, 9.0
Red Hat glusterfs: from 3.12.0 before 3.12.14; from 4.1.0 before 4.1.8 — fixed in 3.12.14, 4.1.8
openSUSE Leap: 15.1
RedHat Enterprise Linux Server: 6.0, 7.0
RedHat Virtualization Host: 4.0

How to fix

Upgrade to a fixed version: Red Hat glusterfs 3.12.14, 4.1.8. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00035.html
https://access.redhat.com/errata/RHSA-2018:2607
https://access.redhat.com/errata/RHSA-2018:2608
https://access.redhat.com/errata/RHSA-2018:3470
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10923
https://lists.debian.org/debian-lts-announce/2018/09/msg00021.html
https://lists.debian.org/debian-lts-announce/2021/11/msg00000.html
https://security.gentoo.org/glsa/201904-06
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00035.html
https://access.redhat.com/errata/RHSA-2018:2607
https://access.redhat.com/errata/RHSA-2018:2608
https://access.redhat.com/errata/RHSA-2018:3470

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