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Affected Component
Analysis
squashfs-tools
Exploitable
Name
CVE-2021-40153
Description
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.
CWEs
Published Date
Updated Date
Workaround
-
Advisories
https://bugs.launchpad.net/ubuntu/+source/squashfs-tools/+bug/1941790Third Party Advisory
https://www.debian.org/security/2021/dsa-4967Third Party Advisory
https://bugs.launchpad.net/ubuntu/+source/squashfs-tools/+bug/1941790Third Party Advisory
https://www.debian.org/security/2021/dsa-4967Third Party Advisory
Analysis#
Vulnerability Ratings#
8.1
CVSSv31
5.8
CVSSv2