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.
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 | 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 |
| 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 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | glusterfs | Not affected |
| Red Hat Enterprise Linux 6 | glusterfs | Not affected |
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