Security restrictions bypass in fuse3 (Alpine package)

Published: 2018-07-25

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2018-10906
CWE-ID	CWE-264
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	fuse3 (Alpine package) Operating systems & Components / Operating system package or component
Vendor	Alpine Linux Development Team

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Security restrictions bypass

EUVDB-ID: #VU14103

Risk: Low

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-10906

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to insufficient access and privileges controls. A remote attacker can mount a FUSE file system with the 'allow_other' mount option regardless of whether 'user_allow_other' is set in the fuse configuration when SELinux is active, trick them into accessing files on that file system, bypass security restrictions and possibly cause the service to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

fuse3 (Alpine package): 3.2.2-r0 - 3.2.4-r0

CPE2.3

External links

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.