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HIGH

glusterfs: Device files can be created in arbitrary locations

Published Sep 4, 2018

Description

A flaw was found in RPC request using gfs3_mknod_req supported by glusterfs server. An authenticated attacker could use this flaw to write files to an arbitrary location via path traversal and execute arbitrary code on a glusterfs server node.

Affected products

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

Weaknesses (2)

CWE-20

Improper Input Validation

CWE-22

Path Traversal

References (12)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Sep 4, 2018
Updated Aug 5, 2024
Reserved May 9, 2018
Link CVE-2018-10926
CISA Vulnrichment
Updated n/a
NVD
Status Modified
Modified Jun 17, 2026
Link CVE-2018-10926
Red Hat
Severity Important
Public date Sep 4, 2018
Links CVE-2018-10926 - Bugzilla