CVE-2021-41072

2021-09-1400:00:00

ubuntu.com

8.1 High

CVSS3

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

5.8 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.003 Low

EPSS

Percentile

69.2%

JSON

squashfs_opendir in unsquash-2.c in Squashfs-Tools 4.5 allows Directory
Traversal, a different vulnerability than CVE-2021-40153. A squashfs
filesystem that has been crafted to include a symbolic link and then
contents under the same filename in a filesystem can cause unsquashfs to
first create the symbolic link pointing outside the expected directory, and
then the subsequent write operation will cause the unsquashfs process to
write through the symbolic link elsewhere in the filesystem.

OSVersionArchitecturePackageVersionFilename
ubuntu18.04noarchsquashfs-tools< 1:4.3-6ubuntu0.18.04.4UNKNOWN
ubuntu20.04noarchsquashfs-tools< 1:4.4-1ubuntu0.2UNKNOWN
ubuntu21.04noarchsquashfs-tools< 1:4.4-2ubuntu0.2UNKNOWN
ubuntu21.10noarchsquashfs-tools< 1:4.4-2ubuntu2UNKNOWN
ubuntu22.04noarchsquashfs-tools< 1:4.4-2ubuntu2UNKNOWN
ubuntu16.04noarchsquashfs-tools< 1:4.3-3ubuntu2.16.04.3+esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-onlyUNKNOWN

OS	Version	Architecture	Package	Version	Filename
ubuntu	18.04	noarch	squashfs-tools	< 1:4.3-6ubuntu0.18.04.4	UNKNOWN
ubuntu	20.04	noarch	squashfs-tools	< 1:4.4-1ubuntu0.2	UNKNOWN
ubuntu	21.04	noarch	squashfs-tools	< 1:4.4-2ubuntu0.2	UNKNOWN
ubuntu	21.10	noarch	squashfs-tools	< 1:4.4-2ubuntu2	UNKNOWN
ubuntu	22.04	noarch	squashfs-tools	< 1:4.4-2ubuntu2	UNKNOWN
ubuntu	16.04	noarch	squashfs-tools	< 1:4.3-3ubuntu2.16.04.3+esm1) Available with Ubuntu Pro or Ubuntu Pro (Infra-only	UNKNOWN