It was found that fix for CVE-2018-1088 introduced a new vulnerability in the way 'auth.allow' is implemented in glusterfs server. An unauthenticated gluster client could mount gluster storage volumes.
Find out more about CVE-2018-1112 from the MITRE CVE dictionary dictionary and NIST NVD.
This vulnerability affects gluster servers that use 'auth.allow' to restrict access to gluster volumes. Gluster servers using TLS to authenticate gluster clients are not affected by this. This vulnerability allows any client to connect to any gluster volume which only uses auth.allow to restrict access.
This issue did not affect the versions of glusterfs as shipped with Red Hat Enterprise Linux 6 and 7 because only gluster client is shipped in these products. CVE-2018-1112 affects glusterfs-server package as shipped with Red Hat Gluster Storage 3.
| CVSS3 Base Score | 8 |
|---|---|
| CVSS3 Base Metrics | CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| Attack Vector | Adjacent Network |
| Attack Complexity | Low |
| Privileges Required | None |
| User Interaction | Required |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity Impact | High |
| Availability Impact | High |
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Storage Native Client for Red Hat Enterprise Linux 6 (glusterfs) | RHSA-2018:1268 | 2018-04-30 |
| Red Hat Virtualization 4 Management Agent for RHEL 7 Hosts | RHSA-2018:1269 | 2018-04-30 |
| Red Hat Gluster Storage Server 3.3 on RHEL-7 (glusterfs) | RHSA-2018:1269 | 2018-04-30 |
| Red Hat Storage Native Client for Red Hat Enterprise Linux 7 (glusterfs) | RHSA-2018:1269 | 2018-04-30 |
| Red Hat Gluster Storage Server 3.3 on RHEL-6 (glusterfs) | RHSA-2018:1268 | 2018-04-30 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | glusterfs | Not affected |
| Red Hat Enterprise Linux 6 | glusterfs | Not affected |
1. Use TLS Authentication to authenticate gluster clients to limit access to gluster storage volumes
2. The gluster server should be on LAN, firewalled to trusted systems, and not reachable from public networks.
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