OESA-2021-1425

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Source

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1425

Import Source

https://repo.openeuler.org/security/data/osv/OESA-2021-1425.json

JSON Data

https://api.osv.dev/v1/vulns/OESA-2021-1425

Upstream

CVE-2021-40153

CVE-2021-41072

Published

2021-11-12T11:03:20Z

Modified

2025-09-03T06:17:37.525699Z

Summary

squashfs-tools security update

Details

Squashfs is a highly compressed read-only filesystem for Linux. It uses either gzip/xz/lzo/lz4/zstd compression to compress both files, inodes and directories.

Security Fix(es):

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.(CVE-2021-41072)

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.(CVE-2021-40153)

Database specific

{
    "severity": "High"
}

References

Affected packages

openEuler:20.03-LTS-SP1 / squashfs-tools

Package

Name: squashfs-tools
Purl: pkg:rpm/openEuler/squashfs-tools&distro=openEuler-20.03-LTS-SP1

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.4-5.oe1

Ecosystem specific

{
    "src": [
        "squashfs-tools-4.4-5.oe1.src.rpm"
    ],
    "aarch64": [
        "squashfs-tools-4.4-5.oe1.aarch64.rpm",
        "squashfs-tools-debuginfo-4.4-5.oe1.aarch64.rpm",
        "squashfs-tools-debugsource-4.4-5.oe1.aarch64.rpm"
    ],
    "x86_64": [
        "squashfs-tools-debuginfo-4.4-5.oe1.x86_64.rpm",
        "squashfs-tools-debugsource-4.4-5.oe1.x86_64.rpm",
        "squashfs-tools-4.4-5.oe1.x86_64.rpm"
    ]
}

openEuler:20.03-LTS-SP2 / squashfs-tools

Package

Name: squashfs-tools
Purl: pkg:rpm/openEuler/squashfs-tools&distro=openEuler-20.03-LTS-SP2

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.4-5.oe1

Ecosystem specific

{
    "src": [
        "squashfs-tools-4.4-5.oe1.src.rpm"
    ],
    "aarch64": [
        "squashfs-tools-debugsource-4.4-5.oe1.aarch64.rpm",
        "squashfs-tools-4.4-5.oe1.aarch64.rpm",
        "squashfs-tools-debuginfo-4.4-5.oe1.aarch64.rpm"
    ],
    "x86_64": [
        "squashfs-tools-4.4-5.oe1.x86_64.rpm",
        "squashfs-tools-debugsource-4.4-5.oe1.x86_64.rpm",
        "squashfs-tools-debuginfo-4.4-5.oe1.x86_64.rpm"
    ]
}