CVE-2021-40153

CVE Details

Release Date:	2019-09-10
Impact:	Moderate	What is this?

Description

squashfs_opendir in unsquash-1.c in Squashfs-Tools 4.5 stores the filename in the directory entry; this is then used by unsquashfs to create the new file during the unsquash. The filename is not validated for traversal outside of the destination directory, and thus allows writing to locations outside of the destination.

See more information about CVE-2021-40153 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	8.1
Vector String:	CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Version:	3.0
Attack Vector:	Network
Attack Complexity:	Low
Privileges Required:	None
User Interaction:	Required
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	High
Availability Impact:	High

Errata information

Platform	Errata	Release Date
Oracle Linux version 8 (squashfs-tools)	ELSA-2024-3139	2024-05-23
Oracle Linux version 9 (squashfs-tools)	ELSA-2024-2396	2024-05-02