UBUNTU-CVE-2021-24032

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Source
https://ubuntu.com/security/CVE-2021-24032
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-24032.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2021-24032
Upstream
Downstream
Related
Published
2021-02-20T00:00:00Z
Modified
2025-09-08T16:47:00Z
Severity
  • 4.7 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

Beginning in v1.4.1 and prior to v1.4.9, due to an incomplete fix for CVE-2021-24031, the Zstandard command-line utility created output files with default permissions and restricted those permissions immediately afterwards. Output files could therefore momentarily be readable or writable to unintended parties.

References

Affected packages

Ubuntu:Pro:16.04:LTS / libzstd

Package

Name
libzstd
Purl
pkg:deb/ubuntu/libzstd@1.3.1+dfsg-1~ubuntu0.16.04.1+esm3?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.3.1+dfsg-1~ubuntu0.16.04.1+esm3

Affected versions

0.*

0.4.5-1
0.5.1-1

1.*

1.3.1+dfsg-1~ubuntu0.16.04.1
1.3.1+dfsg-1~ubuntu0.16.04.1+esm1
1.3.1+dfsg-1~ubuntu0.16.04.1+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.3.1+dfsg-1~ubuntu0.16.04.1+esm3",
            "binary_name": "libzstd1"
        },
        {
            "binary_version": "1.3.1+dfsg-1~ubuntu0.16.04.1+esm3",
            "binary_name": "libzstd1-dev"
        },
        {
            "binary_version": "1.3.1+dfsg-1~ubuntu0.16.04.1+esm3",
            "binary_name": "zstd"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Ubuntu:18.04:LTS / libzstd

Package

Name
libzstd
Purl
pkg:deb/ubuntu/libzstd@1.3.3+dfsg-2ubuntu1.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.3.3+dfsg-2ubuntu1.2

Affected versions

1.*

1.3.1+dfsg-1
1.3.2+dfsg-1
1.3.2+dfsg2-1
1.3.3+dfsg-1
1.3.3+dfsg-1ubuntu1
1.3.3+dfsg-2ubuntu1
1.3.3+dfsg-2ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.3.3+dfsg-2ubuntu1.2",
            "binary_name": "libzstd-dev"
        },
        {
            "binary_version": "1.3.3+dfsg-2ubuntu1.2",
            "binary_name": "libzstd1"
        },
        {
            "binary_version": "1.3.3+dfsg-2ubuntu1.2",
            "binary_name": "libzstd1-dev"
        },
        {
            "binary_version": "1.3.3+dfsg-2ubuntu1.2",
            "binary_name": "zstd"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:20.04:LTS / libzstd

Package

Name
libzstd
Purl
pkg:deb/ubuntu/libzstd@1.4.4+dfsg-3ubuntu0.1?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
1.4.4+dfsg-3ubuntu0.1

Affected versions

1.*

1.4.3+dfsg-1
1.4.4+dfsg-1
1.4.4+dfsg-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "1.4.4+dfsg-3ubuntu0.1",
            "binary_name": "libzstd-dev"
        },
        {
            "binary_version": "1.4.4+dfsg-3ubuntu0.1",
            "binary_name": "libzstd1"
        },
        {
            "binary_version": "1.4.4+dfsg-3ubuntu0.1",
            "binary_name": "zstd"
        }
    ],
    "availability": "No subscription required"
}