CVE-2018-10906 Information

Description

In fuse before versions 2.9.8 and 3.x before 3.2.5 fusermount is vulnerable to a restriction bypass when SELinux is active. This allows non-root users to mount a FUSE file system with the ‘allow_other’ mount option regardless of whether ‘user_allow_other’ is set in the fuse configuration. An attacker may use this flaw to mount a FUSE file system accessible by other users and trick them into accessing files on that file system possibly causing Denial of Service or other unspecified effects.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Reference

https://access.redhat.com/errata/RHSA-2018:3324 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10906 https://lists.debian.org/debian-lts-announce/2018/08/msg00015.html https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5XYA6PXT5PPWVK7CM7K4YRCYWA37DODB/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A253TZWZK6R7PT2S5JIEAQJR2TYKX7V2/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BREAIWIK64DRJWHIGR47L2D5YICY4HQ3/ https://www.debian.org/security/2018/dsa-4257 https://www.exploit-db.com/exploits/45106/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8