USN-3730-1

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Source
https://ubuntu.com/security/notices/USN-3730-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3730-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-3730-1
Upstream
Related
Published
2018-08-06T16:34:25.759194Z
Modified
2025-10-13T04:34:41Z
Summary
lxc vulnerability
Details

Matthias Gerstner discovered that LXC incorrectly handled the lxc-user-nic utility. A local attacker could possibly use this issue to open arbitrary files.

References

Affected packages

Ubuntu:18.04:LTS / lxc

Package

Name
lxc
Purl
pkg:deb/ubuntu/lxc@3.0.1-0ubuntu1~18.04.2?arch=source&distro=bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.0.1-0ubuntu1~18.04.2

Affected versions

2.*

2.1.0-0ubuntu1
2.1.1-0ubuntu1

3.*

3.0.0~beta1-0ubuntu3
3.0.0~beta2-0ubuntu2
3.0.0~beta3-0ubuntu1
3.0.0~beta4-0ubuntu1
3.0.0-0ubuntu1
3.0.0-0ubuntu2
3.0.1-0ubuntu1~18.04.1

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "3.0.1-0ubuntu1~18.04.2",
            "binary_name": "liblxc-common"
        },
        {
            "binary_version": "3.0.1-0ubuntu1~18.04.2",
            "binary_name": "liblxc-dev"
        },
        {
            "binary_version": "3.0.1-0ubuntu1~18.04.2",
            "binary_name": "liblxc1"
        },
        {
            "binary_version": "3.0.1-0ubuntu1~18.04.2",
            "binary_name": "libpam-cgfs"
        },
        {
            "binary_version": "3.0.1-0ubuntu1~18.04.2",
            "binary_name": "lxc"
        },
        {
            "binary_version": "3.0.1-0ubuntu1~18.04.2",
            "binary_name": "lxc-dev"
        },
        {
            "binary_version": "3.0.1-0ubuntu1~18.04.2",
            "binary_name": "lxc-utils"
        },
        {
            "binary_version": "3.0.1-0ubuntu1~18.04.2",
            "binary_name": "lxc1"
        }
    ]
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:18.04:LTS",
    "cves": [
        {
            "id": "CVE-2018-6556",
            "severity": [
                {
                    "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}