Detections
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Alpine: multiple squashfs-tools packages: security update to 4.5-r0

high Tenable Cloud Security Plugin ID 424549

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - 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. (CVE-2021-40153)

See Also

https://security.alpinelinux.org/vuln/CVE-2021-40153

Plugin Details

Severity: High

ID: 424549

Version: Revision 1.8

Type: Local

Published: 4/4/2025

Updated: 7/2/2026

Supported Sensors: Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 4.3

Percentile: 53.04

CVSS v2

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 4.5

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

CVSS Score Source: CVE-2021-40153

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.3

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

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

Vulnerability Information

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 8/27/2021

Reference Information

CVE: CVE-2021-40153