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Affected Component
Analysis
squashfs-tools
Patched
Name
CVE-2021-41072
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.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
https://www.debian.org/security/2021/dsa-4987Third Party Advisory
https://www.debian.org/security/2021/dsa-4987Third Party Advisory
Analysis#
Vulnerability Ratings#
8.1
CVSSv31
5.8
CVSSv2
Others affected components#
Resolved with patches#
squashfs-tools (yocto:kirkstone)
#
Title
Author
Resolve
1
Unsquashfs: additional write outside destination directory
Phillip Lougher <phillip@squashfs.org.uk>
CVE-2021-41072