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Debian: CVE-2021-40153: squashfs-tools -- security update

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Debian: CVE-2021-40153: squashfs-tools -- security update

Severity
6
CVSS
(AV:N/AC:M/Au:N/C:N/I:P/A:P)
Published
08/27/2021
Created
09/03/2021
Added
09/02/2021
Modified
09/09/2021

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(s)

  • debian-upgrade-squashfs-tools

References

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