Vulnerability Details : CVE-2018-10906
Potential exploit
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.
Vulnerability category: BypassGain privilegeDenial of service
Products affected by CVE-2018-10906
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*
- cpe:2.3:a:fuse_project:fuse:*:*:*:*:*:*:*:*
- cpe:2.3:a:fuse_project:fuse:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-10906
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 19 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-10906
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
|
7.8
|
HIGH | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L |
1.8
|
3.4
|
Red Hat, Inc. |
CWE ids for CVE-2018-10906
-
The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.Assigned by: nvd@nist.gov (Primary)
-
The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action.Assigned by: secalert@redhat.com (Secondary)
References for CVE-2018-10906
-
https://lists.debian.org/debian-lts-announce/2018/08/msg00015.html
[SECURITY] [DLA 1468-1] fuse security updateMailing List;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2018:3324
RHSA-2018:3324 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://www.exploit-db.com/exploits/45106/
fusermount - user_allow_other Restriction Bypass and SELinux Label ControlExploit;Third Party Advisory;VDB Entry
-
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10906
1602996 – (CVE-2018-10906) CVE-2018-10906 fuse: bypass of the "user_allow_other" restriction when SELinux is activeIssue Tracking;Patch;Third Party Advisory
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/A253TZWZK6R7PT2S5JIEAQJR2TYKX7V2/
[SECURITY] Fedora 28 Update: fuse-2.9.9-1.fc28 - package-announce - Fedora Mailing-Lists
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5XYA6PXT5PPWVK7CM7K4YRCYWA37DODB/
[SECURITY] Fedora 29 Update: fuse-2.9.9-1.fc29 - package-announce - Fedora Mailing-Lists
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BREAIWIK64DRJWHIGR47L2D5YICY4HQ3/
[SECURITY] Fedora 30 Update: fuse-2.9.9-1.fc30 - package-announce - Fedora Mailing-Lists
-
https://www.debian.org/security/2018/dsa-4257
Debian -- Security Information -- DSA-4257-1 fuseThird Party Advisory
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