USN-6555-1

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Source
https://ubuntu.com/security/notices/USN-6555-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6555-1.json
JSON Data
https://api.test.osv.dev/v1/vulns/USN-6555-1
Upstream
Related
Published
2023-12-13T13:23:48.100975Z
Modified
2025-10-13T04:36:43Z
Summary
xorg-server, xwayland vulnerabilities
Details

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled XKB button actions. An attacker could possibly use this issue to cause the X Server to crash, execute arbitrary code, or escalate privileges. (CVE-2023-6377)

Jan-Niklas Sohn discovered that the X.Org X Server incorrectly handled memory when processing the RRChangeOutputProperty and RRChangeProviderProperty APIs. An attacker could possibly use this issue to cause the X Server to crash, or obtain sensitive information. (CVE-2023-6478)

References

Affected packages

Ubuntu:20.04:LTS / xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server@2:1.20.13-1ubuntu1~20.04.12?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:1.20.13-1ubuntu1~20.04.12

Affected versions

2:1.*

2:1.20.5+git20191008-0ubuntu1
2:1.20.6-1ubuntu1
2:1.20.7-2ubuntu1
2:1.20.7-2ubuntu2
2:1.20.8-2ubuntu2
2:1.20.8-2ubuntu2.1
2:1.20.8-2ubuntu2.2
2:1.20.8-2ubuntu2.3
2:1.20.8-2ubuntu2.4
2:1.20.8-2ubuntu2.6
2:1.20.9-2ubuntu1.1~20.04.1
2:1.20.9-2ubuntu1.2~20.04.1
2:1.20.9-2ubuntu1.2~20.04.2
2:1.20.11-1ubuntu1~20.04.2
2:1.20.13-1ubuntu1~20.04.2
2:1.20.13-1ubuntu1~20.04.3
2:1.20.13-1ubuntu1~20.04.4
2:1.20.13-1ubuntu1~20.04.5
2:1.20.13-1ubuntu1~20.04.6
2:1.20.13-1ubuntu1~20.04.8
2:1.20.13-1ubuntu1~20.04.9

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12",
            "binary_name": "xdmx"
        },
        {
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12",
            "binary_name": "xdmx-tools"
        },
        {
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12",
            "binary_name": "xnest"
        },
        {
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12",
            "binary_name": "xorg-server-source"
        },
        {
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12",
            "binary_name": "xserver-common"
        },
        {
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12",
            "binary_name": "xserver-xephyr"
        },
        {
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12",
            "binary_name": "xserver-xorg-core"
        },
        {
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12",
            "binary_name": "xserver-xorg-dev"
        },
        {
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12",
            "binary_name": "xserver-xorg-legacy"
        },
        {
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12",
            "binary_name": "xvfb"
        },
        {
            "binary_version": "2:1.20.13-1ubuntu1~20.04.12",
            "binary_name": "xwayland"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:20.04:LTS",
    "cves": [
        {
            "id": "CVE-2023-6377",
            "severity": [
                {
                    "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": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2023-6478",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}

Ubuntu:22.04:LTS / xorg-server

Package

Name
xorg-server
Purl
pkg:deb/ubuntu/xorg-server@2:21.1.4-2ubuntu1.7~22.04.5?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:21.1.4-2ubuntu1.7~22.04.5

Affected versions

2:1.*

2:1.20.13-1ubuntu1
2:1.20.13-1ubuntu2
2:1.20.14-1ubuntu1

2:21.*

2:21.1.3-2ubuntu2
2:21.1.3-2ubuntu2.1
2:21.1.3-2ubuntu2.2
2:21.1.3-2ubuntu2.3
2:21.1.3-2ubuntu2.4
2:21.1.3-2ubuntu2.5
2:21.1.3-2ubuntu2.6
2:21.1.3-2ubuntu2.7
2:21.1.3-2ubuntu2.8
2:21.1.3-2ubuntu2.9
2:21.1.4-2ubuntu1.7~22.04.1
2:21.1.4-2ubuntu1.7~22.04.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5",
            "binary_name": "xnest"
        },
        {
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5",
            "binary_name": "xorg-server-source"
        },
        {
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5",
            "binary_name": "xserver-common"
        },
        {
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5",
            "binary_name": "xserver-xephyr"
        },
        {
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5",
            "binary_name": "xserver-xorg-core"
        },
        {
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5",
            "binary_name": "xserver-xorg-dev"
        },
        {
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5",
            "binary_name": "xserver-xorg-legacy"
        },
        {
            "binary_version": "2:21.1.4-2ubuntu1.7~22.04.5",
            "binary_name": "xvfb"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2023-6377",
            "severity": [
                {
                    "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": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2023-6478",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}

Ubuntu:22.04:LTS / xwayland

Package

Name
xwayland
Purl
pkg:deb/ubuntu/xwayland@2:22.1.1-1ubuntu0.9?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:22.1.1-1ubuntu0.9

Affected versions

2:21.*

2:21.1.2-0ubuntu1
2:21.1.3-1
2:21.1.3-1ubuntu1
2:21.1.4-1

2:22.*

2:22.1.0-1
2:22.1.1-1
2:22.1.1-1ubuntu0.1
2:22.1.1-1ubuntu0.2
2:22.1.1-1ubuntu0.3
2:22.1.1-1ubuntu0.4
2:22.1.1-1ubuntu0.5
2:22.1.1-1ubuntu0.6
2:22.1.1-1ubuntu0.7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2:22.1.1-1ubuntu0.9",
            "binary_name": "xwayland"
        }
    ],
    "availability": "No subscription required"
}

Database specific

cves_map

{
    "ecosystem": "Ubuntu:22.04:LTS",
    "cves": [
        {
            "id": "CVE-2023-6377",
            "severity": [
                {
                    "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": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        },
        {
            "id": "CVE-2023-6478",
            "severity": [
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L",
                    "type": "CVSS_V3"
                },
                {
                    "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
                    "type": "CVSS_V3"
                },
                {
                    "score": "medium",
                    "type": "Ubuntu"
                }
            ]
        }
    ]
}