Red Hat update for glusterfs
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 2 |
| CVE-ID | CVE-2018-1112 CVE-2018-1088 |
| CWE-ID | CWE-287 CWE-61 |
| Exploitation vector | Network |
| Public exploit |
Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available. |
| Vulnerable software |
Red Hat Virtualization Host Web applications / Remote management & hosting panels Red Hat Gluster Storage Server for On-premise Server applications / File servers (FTP/HTTP) Red Hat Virtualization Server applications / Virtualization software Red Hat Enterprise Linux Server Operating systems & Components / Operating system |
| Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
1) Improper authentication
EUVDB-ID: #VU12435
Risk: Low
CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Clear]
CVE-ID: CVE-2018-1112
CWE-ID:
CWE-287 - Improper Authentication
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to bypass security restrictions on the target system.
The weakness exists due to improper authentication when using 'auth.allow' option. A remote attacker can mount gluster storage volumes.
Install update from vendor's website.
Vulnerable software versionsRed Hat Virtualization Host: 4
Red Hat Gluster Storage Server for On-premise: 3
Red Hat Virtualization: 4
Red Hat Enterprise Linux Server: 7
CPE2.3- cpe:2.3:a:red_hat:red_hat_virtualization_host:4:*:*:*:*:*:*:*
- cpe:2.3:a:red_hat:red_hat_gluster_storage_server_for_on-premise:3:*:*:*:*:*:*:*
- cpe:2.3:a:red_hat:red_hat_virtualization:4:*:*:*:*:*:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server:7:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2018:1269
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
2) Symlink attack
EUVDB-ID: #VU12150
Risk: Low
CVSSv4.0: 7.4 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]
CVE-ID: CVE-2018-1088
CWE-ID:
CWE-61 - UNIX Symbolic Link (Symlink) Following
Exploit availability: Yes
DescriptionThe vulnerability allows an adjacent unauthenticated attacker to gain elevated privileges on the target system.
The weakness exists in the snapshot scheduler due to improper security restrictions during the mounting of gluster volumes. An adjacent attacker can access a gluster node, perform symbolic link attack that is designed to schedule malicious cronjobs and gain root privileges.
Install update from vendor's website.
Vulnerable software versionsRed Hat Virtualization Host: 4
Red Hat Gluster Storage Server for On-premise: 3
Red Hat Virtualization: 4
Red Hat Enterprise Linux Server: 7
CPE2.3- cpe:2.3:a:red_hat:red_hat_virtualization_host:4:*:*:*:*:*:*:*
- cpe:2.3:a:red_hat:red_hat_gluster_storage_server_for_on-premise:3:*:*:*:*:*:*:*
- cpe:2.3:a:red_hat:red_hat_virtualization:4:*:*:*:*:*:*:*
- cpe:2.3:o:red_hat:red_hat_enterprise_linux_server:7:*:*:*:*:red_hat_enterprise_linux:*:*
https://access.redhat.com/errata/RHSA-2018:1269
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
