USN-6407-1

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Source
https://ubuntu.com/security/notices/USN-6407-1
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-6407-1.json
JSON Data
https://api.osv.dev/v1/vulns/USN-6407-1
Upstream
Related
Published
2023-10-03T16:57:57.011747Z
Modified
2025-10-13T04:36:37Z
Summary
libx11 vulnerabilities
Details

Gregory James Duck discovered that libx11 incorrectly handled certain keyboard symbols. If a user were tricked into connecting to a malicious X server, a remote attacker could use this issue to cause libx11 to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2023-43785)

Yair Mizrahi discovered that libx11 incorrectly handled certain malformed XPM image files. If a user were tricked into opening a specially crafted XPM image file, a remote attacker could possibly use this issue to consume memory, leading to a denial of service. (CVE-2023-43786)

Yair Mizrahi discovered that libx11 incorrectly handled certain malformed XPM image files. If a user were tricked into opening a specially crafted XPM image file, a remote attacker could use this issue to cause libx11 to crash, leading to a denial of service, or possibly execute arbitrary code. (CVE-2023-43787)

References

Affected packages

Ubuntu:20.04:LTS / libx11

Package

Name
libx11
Purl
pkg:deb/ubuntu/libx11@2:1.6.9-2ubuntu1.6?arch=source&distro=focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:1.6.9-2ubuntu1.6

Affected versions

2:1.*

2:1.6.8-1
2:1.6.9-2
2:1.6.9-2ubuntu1
2:1.6.9-2ubuntu1.1
2:1.6.9-2ubuntu1.2
2:1.6.9-2ubuntu1.5

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libx11-6",
            "binary_version": "2:1.6.9-2ubuntu1.6"
        },
        {
            "binary_name": "libx11-data",
            "binary_version": "2:1.6.9-2ubuntu1.6"
        },
        {
            "binary_name": "libx11-dev",
            "binary_version": "2:1.6.9-2ubuntu1.6"
        },
        {
            "binary_name": "libx11-xcb-dev",
            "binary_version": "2:1.6.9-2ubuntu1.6"
        },
        {
            "binary_name": "libx11-xcb1",
            "binary_version": "2:1.6.9-2ubuntu1.6"
        }
    ]
}

Database specific 

{
    "cves_map": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "cves": [
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
                    },
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "medium"
                    }
                ],
                "id": "CVE-2023-43785"
            },
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
                    },
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "medium"
                    }
                ],
                "id": "CVE-2023-43786"
            },
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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"
                    }
                ],
                "id": "CVE-2023-43787"
            }
        ]
    }
}

Ubuntu:22.04:LTS / libx11

Package

Name
libx11
Purl
pkg:deb/ubuntu/libx11@2:1.7.5-1ubuntu0.3?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:1.7.5-1ubuntu0.3

Affected versions

2:1.*

2:1.7.2-1
2:1.7.2-2
2:1.7.2-2build1
2:1.7.5-1
2:1.7.5-1ubuntu0.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "libx11-6",
            "binary_version": "2:1.7.5-1ubuntu0.3"
        },
        {
            "binary_name": "libx11-data",
            "binary_version": "2:1.7.5-1ubuntu0.3"
        },
        {
            "binary_name": "libx11-dev",
            "binary_version": "2:1.7.5-1ubuntu0.3"
        },
        {
            "binary_name": "libx11-xcb-dev",
            "binary_version": "2:1.7.5-1ubuntu0.3"
        },
        {
            "binary_name": "libx11-xcb1",
            "binary_version": "2:1.7.5-1ubuntu0.3"
        }
    ]
}

Database specific 

{
    "cves_map": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "cves": [
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
                    },
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "medium"
                    }
                ],
                "id": "CVE-2023-43785"
            },
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
                    },
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
                    },
                    {
                        "type": "Ubuntu",
                        "score": "medium"
                    }
                ],
                "id": "CVE-2023-43786"
            },
            {
                "severity": [
                    {
                        "type": "CVSS_V3",
                        "score": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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"
                    }
                ],
                "id": "CVE-2023-43787"
            }
        ]
    }
}