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UbuntuUSN-5057-1

HistoryAug 31, 2021 - 12:00 a.m.

Squashfs-Tools vulnerability

2021-08-3100:00:00

ubuntu.com

110

squashfs-tools

vulnerability

ubuntu 21.04

ubuntu 20.04 lts

ubuntu 18.04 esm

packages

squashfs filesystems

etienne stalmans

malformed files

arbitrary files

filesystem

unix

CVSS2

5.8

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

8.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

AI Score

8.2

Confidence

High

EPSS

0.012

Percentile

85.3%

JSON

Releases

Ubuntu 21.04
Ubuntu 20.04 LTS
Ubuntu 18.04 ESM

Packages

squashfs-tools - Tools to create and modify squashfs filesystems

Details

Etienne Stalmans discovered that Squashfs-Tools mishandled certain malformed SQUASHFS files. An attacker could use this vulnerability to write arbitrary files to the filesystem.

OSVersionArchitecturePackageVersionFilename
Ubuntu21.04noarchsquashfs-tools< 1:4.4-2ubuntu0.1UNKNOWN
Ubuntu21.04noarchsquashfs-tools-dbgsym< 1:4.4-2ubuntu0.1UNKNOWN
Ubuntu20.04noarchsquashfs-tools< 1:4.4-1ubuntu0.1UNKNOWN
Ubuntu20.04noarchsquashfs-tools-dbgsym< 1:4.4-1ubuntu0.1UNKNOWN
Ubuntu18.04noarchsquashfs-tools< 1:4.3-6ubuntu0.18.04.3UNKNOWN
Ubuntu18.04noarchsquashfs-tools-dbgsym< 1:4.3-6ubuntu0.18.04.3UNKNOWN

OS	Version	Architecture	Package	Version	Filename
Ubuntu	21.04	noarch	squashfs-tools	< 1:4.4-2ubuntu0.1	UNKNOWN
Ubuntu	21.04	noarch	squashfs-tools-dbgsym	< 1:4.4-2ubuntu0.1	UNKNOWN
Ubuntu	20.04	noarch	squashfs-tools	< 1:4.4-1ubuntu0.1	UNKNOWN
Ubuntu	20.04	noarch	squashfs-tools-dbgsym	< 1:4.4-1ubuntu0.1	UNKNOWN
Ubuntu	18.04	noarch	squashfs-tools	< 1:4.3-6ubuntu0.18.04.3	UNKNOWN
Ubuntu	18.04	noarch	squashfs-tools-dbgsym	< 1:4.3-6ubuntu0.18.04.3	UNKNOWN