USN-4760-1

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Source
https://ubuntu.com/security/notices/USN-4760-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4760-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4760-1
Upstream
Related
Published
2021-03-08T18:21:54.225596Z
Modified
2025-10-13T04:35:23Z
Summary
libzstd vulnerabilities
Details

It was discovered that libzstd incorrectly handled file permissions. A local attacker could possibly use this issue to access certain files, contrary to expectations.

References

Affected packages

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 

{
    "availability": "No subscription required",
    "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"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:18.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-24031",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2021-24032",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}

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 

{
    "availability": "No subscription required",
    "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"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-24031",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2021-24032",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}