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Directory Traversal Affecting squashfs-tools package, versions *

medium

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.75% (81st percentile)
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NVD
8.1 high
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Red Hat
8.1 high
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SUSE
6.6 medium

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  • Snyk ID SNYK-CENTOS8-SQUASHFSTOOLS-1971981
  • published 3 Sep 2021
  • disclosed 10 Sep 2019
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Introduced: 10 Sep 2019

CVE-2021-40153 Open this link in a new tab
CWE-22 Open this link in a new tab

How to fix?

There is no fixed version for Centos:8 squashfs-tools.

NVD Description

Note: Versions mentioned in the description apply only to the upstream squashfs-tools package and not the squashfs-tools package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

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.

References