USN-4968-2

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Source
https://ubuntu.com/security/notices/USN-4968-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4968-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4968-2
Upstream
Related
Published
2021-05-31T12:08:03.694206Z
Modified
2025-10-13T04:35:30Z
Summary
lz4 vulnerability
Details

USN-4968-1 fixed a vulnerability in LZ4. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that LZ4 incorrectly handled certain memory operations. If a user or automated system were tricked into uncompressing a specially- crafted LZ4 file, a remote attacker could use this issue to cause LZ4 to crash, resulting in a denial of service, or possibly execute arbitrary code.

References

Affected packages

Ubuntu:Pro:14.04:LTS / lz4

Package

Name
lz4
Purl
pkg:deb/ubuntu/lz4@0.0~r114-2ubuntu1+esm2?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.0~r114-2ubuntu1+esm2

Affected versions

0.*

0.0~r94-2
0.0~r99-1
0.0~r107-1
0.0~r109-1
0.0~r114-2ubuntu1
0.0~r114-2ubuntu1+esm1

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "liblz4-1",
            "binary_version": "0.0~r114-2ubuntu1+esm2"
        },
        {
            "binary_name": "liblz4-dev",
            "binary_version": "0.0~r114-2ubuntu1+esm2"
        },
        {
            "binary_name": "liblz4-tool",
            "binary_version": "0.0~r114-2ubuntu1+esm2"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:14.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-3520",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}

Ubuntu:Pro:16.04:LTS / lz4

Package

Name
lz4
Purl
pkg:deb/ubuntu/lz4@0.0~r131-2ubuntu2+esm1?arch=source&distro=esm-infra/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
0.0~r131-2ubuntu2+esm1

Affected versions

0.*

0.0~r131-1
0.0~r131-2
0.0~r131-2ubuntu2

Ecosystem specific 

{
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_name": "liblz4-1",
            "binary_version": "0.0~r131-2ubuntu2+esm1"
        },
        {
            "binary_name": "liblz4-dev",
            "binary_version": "0.0~r131-2ubuntu2+esm1"
        },
        {
            "binary_name": "liblz4-tool",
            "binary_version": "0.0~r131-2ubuntu2+esm1"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:16.04:LTS",
    "cves": [
        {
            "id": "CVE-2021-3520",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}