CVE-2021-40153

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.

References

Affected packages

Git / github.com/plougher/squashfs-tools

Affected ranges

Type

GIT

Repo

https://github.com/plougher/squashfs-tools

Events

Introduced

Last affected

0496d7c3de3e09da37ba492081c86159806ebb07

Database specific

{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "4.5"
        }
    ]
}

Affected versions

3.*

3.1

3.2

3.2-r2

4.*

4.4

4.4-git.1

4.5

Database specific

unresolved_ranges

[
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "34"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "9.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "10.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "7.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "8.0"
            }
        ]
    },
    {
        "events": [
            {
                "introduced": "0"
            },
            {
                "last_affected": "33"
            }
        ]
    }
]

source

"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-40153.json"