Table of Contents
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/.
CVSS v3 metrics
|CVSS3 Base Score||8.8|
|CVSS3 Base Metrics||CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H|
Red Hat Security Errata
|Red Hat Gluster Storage 3.4 for RHEL 6 (glusterfs)||RHSA-2018:2608||2018-09-04|
|Red Hat Storage Native Client for Red Hat Enterprise Linux 6 (glusterfs)||RHSA-2018:2608||2018-09-04|
|Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts||RHSA-2018:3470||2018-11-05|
|Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts||RHSA-2018:2607||2018-09-04|
|Red Hat Storage Native Client for Red Hat Enterprise Linux 7 (glusterfs)||RHSA-2018:2607||2018-09-04|
|Red Hat Gluster Storage 3.4 for RHEL 7 (glusterfs)||RHSA-2018:2607||2018-09-04|
Affected Packages State
|Red Hat Enterprise Linux 8||glusterfs||Not affected|
|Red Hat Enterprise Linux 7||glusterfs||Not affected|
|Red Hat Enterprise Linux 6||glusterfs||Not affected|
AcknowledgementsRed Hat would like to thank Michael Hanselmann (hansmi.ch) for reporting this issue.
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.