USN-3730-1

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

0 Unknown 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_name":  "liblxc-common",
            "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-utils",
            "binary_version":  "3.0.1-0ubuntu1~18.04.2"
        },
        {
            "binary_name":  "lxc1",
            "binary_version":  "3.0.1-0ubuntu1~18.04.2"
        }
    ]
}

Database specific

cves_map

{
    "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"
                }
            ]
        }
    ],
    "ecosystem":  "Ubuntu:18.04:LTS"
}

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3730-1.json"