CVE-2018-14659

Impact:
Moderate
Public Date:
2018-10-31
CWE:
CWE-400
Bugzilla:
1635929: CVE-2018-14659 glusterfs: Unlimited file creation via "GF_XATTR_IOSTATS_DUMP_KEY" xattr allows for denial of service
A flaw was found in glusterfs server which allowed clients to create io-stats dumps on server node. A remote, authenticated attacker could use this flaw to create io-stats dump on a server without any limitation and utilizing all available inodes resulting in remote denial of service.

Find out more about CVE-2018-14659 from the MITRE CVE dictionary dictionary and NIST NVD.

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.

CVSS v3 metrics

CVSS3 Base Score 6.5
CVSS3 Base Metrics CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity Impact None
Availability Impact High

Red Hat Security Errata

Platform Errata Release Date
Red Hat Storage Native Client for Red Hat Enterprise Linux 6 (glusterfs) RHSA-2018:3431 2018-10-31
Red Hat Gluster Storage 3.4 for RHEL 7 (glusterfs) RHSA-2018:3432 2018-10-31
Red Hat Gluster Storage 3.4 for RHEL 6 (glusterfs) RHSA-2018:3431 2018-10-31
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-2018:3432 2018-10-31
Red Hat Storage Native Client for Red Hat Enterprise Linux 7 (glusterfs) RHSA-2018:3432 2018-10-31

Affected Packages State

Platform Package 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
Unless explicitly stated as not affected, all previous versions of packages in any minor update stream of a product listed here should be assumed vulnerable, although may not have been subject to full analysis.

Acknowledgements

Red Hat would like to thank Michael Hanselmann (hansmi.ch) for reporting this issue.
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