UBUNTU-CVE-2021-40153

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Source
https://ubuntu.com/security/CVE-2021-40153
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-40153.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-40153
Related
Published
2021-08-27T15:15:00Z
Modified
2021-08-27T15:15:00Z
Severity
  • 8.1 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H CVSS Calculator
Summary
[none]
Details

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

Ubuntu:Pro:16.04:LTS / squashfs-tools

Package

Name
squashfs-tools
Purl
pkg:deb/ubuntu/squashfs-tools?arch=src?distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:4.3-3ubuntu2.16.04.3+esm1

Affected versions

1:4.*

1:4.2+20130409-2.1
1:4.3-3
1:4.3-3ubuntu1
1:4.3-3ubuntu2
1:4.3-3ubuntu2.16.04.1
1:4.3-3ubuntu2.16.04.2
1:4.3-3ubuntu2.16.04.3

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "1:4.3-3ubuntu2.16.04.3+esm1",
            "binary_name": "squashfs-tools"
        },
        {
            "binary_version": "1:4.3-3ubuntu2.16.04.3+esm1",
            "binary_name": "squashfs-tools-dbg"
        },
        {
            "binary_version": "1:4.3-3ubuntu2.16.04.3+esm1",
            "binary_name": "squashfs-tools-dbgsym"
        }
    ]
}

Ubuntu:18.04:LTS / squashfs-tools

Package

Name
squashfs-tools
Purl
pkg:deb/ubuntu/squashfs-tools?arch=src?distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:4.3-6ubuntu0.18.04.3

Affected versions

1:4.*

1:4.3-4ubuntu1
1:4.3-4ubuntu2
1:4.3-6
1:4.3-6ubuntu0.18.04.1
1:4.3-6ubuntu0.18.04.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "1:4.3-6ubuntu0.18.04.3",
            "binary_name": "squashfs-tools"
        },
        {
            "binary_version": "1:4.3-6ubuntu0.18.04.3",
            "binary_name": "squashfs-tools-dbgsym"
        }
    ]
}

Ubuntu:20.04:LTS / squashfs-tools

Package

Name
squashfs-tools
Purl
pkg:deb/ubuntu/squashfs-tools?arch=src?distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1:4.4-1ubuntu0.1

Affected versions

1:4.*

1:4.4-1

Ecosystem specific 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "binaries": [
        {
            "binary_version": "1:4.4-1ubuntu0.1",
            "binary_name": "squashfs-tools"
        },
        {
            "binary_version": "1:4.4-1ubuntu0.1",
            "binary_name": "squashfs-tools-dbgsym"
        }
    ]
}