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amazonAmazonALAS-2018-1123
HistoryApr 17, 2019 - 6:45 p.m.

Medium: fuse

2019-04-1718:45:00
alas.aws.amazon.com
166

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.001

Percentile

48.8%

Issue Overview:

A vulnerability was discovered in fuse. When SELinux is active, fusermount is vulnerable to a restriction bypass. 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. (CVE-2018-10906)

Affected Packages:

fuse

Issue Correction:
Run yum update fuse to update your system.

New Packages:

i686:  
    fuse-libs-2.9.4-1.18.amzn1.i686  
    fuse-debuginfo-2.9.4-1.18.amzn1.i686  
    fuse-devel-2.9.4-1.18.amzn1.i686  
    fuse-2.9.4-1.18.amzn1.i686  
  
src:  
    fuse-2.9.4-1.18.amzn1.src  
  
x86_64:  
    fuse-devel-2.9.4-1.18.amzn1.x86_64  
    fuse-libs-2.9.4-1.18.amzn1.x86_64  
    fuse-debuginfo-2.9.4-1.18.amzn1.x86_64  
    fuse-2.9.4-1.18.amzn1.x86_64  

Additional References

Red Hat: CVE-2018-10906

Mitre: CVE-2018-10906

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

EPSS

0.001

Percentile

48.8%