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Ubuntu: (Multiple Advisories) (CVE-2021-41072): Squashfs-Tools vulnerability

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Ubuntu: (Multiple Advisories) (CVE-2021-41072): Squashfs-Tools vulnerability

Severity
6
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:P)
Published
09/14/2021
Created
09/20/2021
Added
09/15/2021
Modified
11/15/2024

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.

Solution(s)

  • ubuntu-pro-upgrade-squashfs-tools

References

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