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ALPINE-CVE-2021-41072

ALPINE-CVE-2021-41072 PUBLISHED CVSS 8.100000381469727 HIGH

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.

Risk Scores

CVSS 3.1
8.100000381469727
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Affected Products

VendorProductVersions
Alpine:v3.21squashfs-tools0, 4.4-r1, 4.4-r0
Alpine:v3.24squashfs-tools0
Alpine:v3.17squashfs-tools4.2-r0, 0, 4.0-r0
Alpine:v3.15squashfs-tools0, 4.4-r1, 4.4-r0
Alpine:v3.19squashfs-tools4.4-r0, 0, 4.0-r0
Alpine:v3.22squashfs-tools4.0-r1, 4.1-r0, 4.2-r0
Alpine:v3.14squashfs-tools4.3-r6, 0, 4.0-r0
Alpine:v3.18squashfs-tools0, 4.0-r1, 0
Alpine:v3.23squashfs-tools4.0-r0, 0, 0
Alpine:v3.20squashfs-tools4.3-r1, 4.3-r2, 0
Alpine:v3.16squashfs-tools0, 4.0-r0, 4.0-r1

Timeline

  • Sep 14, 2021 CVE Published
  • May 5, 2026 Distribution Patch
  • Jun 15, 2026 CVE Updated
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