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cnvdChina National Vulnerability DatabaseCNVD-2021-67506
HistoryAug 31, 2021 - 12:00 a.m.

Squashfs-Tools has an unspecified vulnerability

2021-08-3100:00:00
China National Vulnerability Database
www.cnvd.org.cn
8

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

Squashfs-Tools is an open source package. version 4.5 of Squashfs-Tools contains a security vulnerability that stems from the squashfs_opendir function in unsquash-1.c in the software that is responsible for storing the filenames in directory entries, which is then used by unsquashfs to create new files during unsquash during unsquash to create new files. The function filename operation does not validate for traversals outside the target directory, and an attacker could exploit the vulnerability to allow filenames to be written to locations outside the target directory.

CPENameOperatorVersion
squashfs-tools squashfs-toolseq4.5

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