It was found that an attacker could issue a xattr request via glusterfs FUSE to cause gluster brick process to crash which will result in a remote denial of service. If gluster multiplexing is enabled this will result in a crash of multiple bricks and gluster volumes.
Find out more about CVE-2018-10914 from the MITRE CVE dictionary dictionary and NIST NVD.
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.
| CVSS3 Base Score | 5.5 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
| Attack Vector | Adjacent Network |
| Attack Complexity | Low |
| Privileges Required | Low |
| User Interaction | None |
| Scope | Unchanged |
| Confidentiality | Low |
| Integrity Impact | Low |
| Availability Impact | Low |
| Platform | Errata | Release Date |
|---|---|---|
| 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 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | glusterfs | Not affected |
| Red Hat Enterprise Linux 6 | glusterfs | Not affected |
SELinux mitigates this issue on Red Hat Gluster Storage 3. SELinux should be in enforcing mode only as permissive mode does not block attacks.
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