CVE-2018-14660

Impact:
Moderate
Public Date:
2018-10-31
CWE:
CWE-400
Bugzilla:
1635926: CVE-2018-14660 glusterfs: Repeat use of "GF_META_LOCK_KEY" xattr allows for memory exhaustion
A flaw was found in glusterfs server which allowed repeated usage of GF_META_LOCK_KEY xattr. A remote, authenticated attacker could use this flaw to create multiple locks for single inode by using setxattr repetitively resulting in memory exhaustion of glusterfs server node.

Find out more about CVE-2018-14660 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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