USN-4656-2

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Source
https://ubuntu.com/security/notices/USN-4656-2
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-4656-2.json
JSON Data
https://api.osv.dev/v1/vulns/USN-4656-2
Upstream
Related
Published
2020-12-07T15:14:43.259501Z
Modified
2025-10-13T04:35:17Z
Summary
xorg-server vulnerabilities
Details

USN-4656-1 fixed several vulnerabilities in X.Org. This update provides the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

Jan-Niklas Sohn discovered that the X.Org X Server XKB extension incorrectly handled certain inputs. A local attacker could possibly use this issue to escalate privileges.

References

Affected packages

Ubuntu:Pro:14.04:LTS / xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server@2:1.15.1-0ubuntu2.11+esm3?arch=source&distro=trusty/esm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:1.15.1-0ubuntu2.11+esm3

Affected versions

2:1.*

2:1.14.3-3ubuntu2
2:1.14.3-3ubuntu3
2:1.14.3-3ubuntu4
2:1.14.3-5ubuntu1
2:1.14.4-1ubuntu1
2:1.14.4-1ubuntu2
2:1.14.4.901-0ubuntu2
2:1.14.5-1ubuntu2
2:1.14.5-1ubuntu4
2:1.15.0-1ubuntu1
2:1.15.0-1ubuntu2
2:1.15.0-1ubuntu3
2:1.15.0-1ubuntu4
2:1.15.0-1ubuntu6
2:1.15.0-1ubuntu7
2:1.15.1-0ubuntu1
2:1.15.1-0ubuntu2
2:1.15.1-0ubuntu2.1
2:1.15.1-0ubuntu2.4
2:1.15.1-0ubuntu2.5
2:1.15.1-0ubuntu2.6
2:1.15.1-0ubuntu2.7
2:1.15.1-0ubuntu2.9
2:1.15.1-0ubuntu2.10
2:1.15.1-0ubuntu2.11
2:1.15.1-0ubuntu2.11+esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3",
            "binary_name": "xdmx"
        },
        {
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3",
            "binary_name": "xdmx-tools"
        },
        {
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3",
            "binary_name": "xnest"
        },
        {
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3",
            "binary_name": "xorg-server-source"
        },
        {
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3",
            "binary_name": "xserver-common"
        },
        {
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3",
            "binary_name": "xserver-xephyr"
        },
        {
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3",
            "binary_name": "xserver-xorg-core"
        },
        {
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3",
            "binary_name": "xserver-xorg-dev"
        },
        {
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3",
            "binary_name": "xserver-xorg-xmir"
        },
        {
            "binary_version": "2:1.15.1-0ubuntu2.11+esm3",
            "binary_name": "xvfb"
        }
    ],
    "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:Pro:14.04:LTS",
    "cves": [
        {
            "id": "CVE-2020-14360",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        },
        {
            "id": "CVE-2020-25712",
            "severity": [
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "CVSS_V3",
                    "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ]
        }
    ]
}