CVE-2021-41072
High
Description
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.
SeverityHigh
CVSS8.1
Exploit probability—
Product
Squashfs-tools
PublishedSep 14, 2021
First seenSep 14, 2021
How to fix
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| squashfs-tools_project squashfs-tools | 4.5 | — |
| debian debian_linux | 9.0, 10.0, 11.0 | — |
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