Debian DSA-4257-1 : fuse - security update

high Nessus Plugin ID 111395

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Synopsis

The remote Debian host is missing a security-related update.

Description

Jann Horn discovered that FUSE, a Filesystem in USErspace, allows the bypass of the 'user_allow_other' restriction when SELinux is active (including in permissive mode). A local user can take advantage of this flaw in the fusermount utility to bypass the system configuration and mount a FUSE filesystem with the 'allow_other' mount option.

Solution

Upgrade the fuse packages.

For the stable distribution (stretch), this problem has been fixed in version 2.9.7-1+deb9u1.

Plugin Details

Severity: High

ID: 111395

File Name: debian_DSA-4257.nasl

Version: 1.5

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 7/30/2018

Updated: 4/5/2019

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 4.6

Temporal Score: 3.6

Vector: CVSS2#AV:L/AC:L/Au:N/C:P/I:P/A:P

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:fuse, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/28/2018

Reference Information

CVE: CVE-2018-10906

DSA: 4257

Detections

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