vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-40153): Squashfs-Tools vulnerability
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:M/Au:N/C:N/I:P/A:P) | Aug 27, 2021 | Aug 31, 2021 | Aug 18, 2025 |
Severity
6
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:P)
Published
Aug 27, 2021
Added
Aug 31, 2021
Modified
Aug 18, 2025
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.
Solution
ubuntu-pro-upgrade-squashfs-tools
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