USN-6642-1

Shoham Danino, Anat Bremler-Barr, Yehuda Afek, and Yuval Shavitt discovered that Bind incorrectly handled parsing large DNS messages. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service. (CVE-2023-4408)

Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered that Bind icorrectly handled validating DNSSEC messages. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service. (CVE-2023-50387)

It was discovered that Bind incorrectly handled preparing an NSEC3 closest encloser proof. A remote attacker could possibly use this issue to cause Bind to consume resources, leading to a denial of service. (CVE-2023-50868)

It was discovered that Bind incorrectly handled reverse zone queries when nxdomain-redirect is enabled. A remote attacker could possibly use this issue to cause Bind to crash, leading to a denial of service. (CVE-2023-5517)

It was discovered that Bind incorrectly handled certain specific recursive query patterns. A remote attacker could possibly use this issue to cause Bind to consume memory, leading to a denial of service. (CVE-2023-6516)

Bind has been updated to 9.6.48. In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes.

Please see the following for more information: https://downloads.isc.org/isc/bind9/9.16.48/doc/arm/html/notes.html

References

Affected packages

Ubuntu:20.04:LTS / bind9

Package

Name: bind9
Purl: pkg:deb/ubuntu/bind9@1:9.16.48-0ubuntu0.20.04.1?arch=source&distro=focal

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1:9.16.48-0ubuntu0.20.04.1

Affected versions

1:9.*

1:9.11.5.P4+dfsg-5.1ubuntu2

1:9.11.5.P4+dfsg-5.1ubuntu3

1:9.11.5.P4+dfsg-5.1ubuntu4

1:9.11.5.P4+dfsg-5.1ubuntu5

1:9.11.14+dfsg-1ubuntu1

1:9.11.14+dfsg-3ubuntu1

1:9.16.0-1ubuntu3

1:9.16.0-1ubuntu4

1:9.16.0-1ubuntu5

1:9.16.1-0ubuntu1

1:9.16.1-0ubuntu2

1:9.16.1-0ubuntu2.1

1:9.16.1-0ubuntu2.2

1:9.16.1-0ubuntu2.3

1:9.16.1-0ubuntu2.4

1:9.16.1-0ubuntu2.6

1:9.16.1-0ubuntu2.7

1:9.16.1-0ubuntu2.8

1:9.16.1-0ubuntu2.9

1:9.16.1-0ubuntu2.10

1:9.16.1-0ubuntu2.11

1:9.16.1-0ubuntu2.12

1:9.16.1-0ubuntu2.14

1:9.16.1-0ubuntu2.15

1:9.16.1-0ubuntu2.16

Ecosystem specific

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "1:9.16.48-0ubuntu0.20.04.1",
            "binary_name": "bind9"
        },
        {
            "binary_version": "1:9.16.48-0ubuntu0.20.04.1",
            "binary_name": "bind9-dnsutils"
        },
        {
            "binary_version": "1:9.16.48-0ubuntu0.20.04.1",
            "binary_name": "bind9-host"
        },
        {
            "binary_version": "1:9.16.48-0ubuntu0.20.04.1",
            "binary_name": "bind9-libs"
        },
        {
            "binary_version": "1:9.16.48-0ubuntu0.20.04.1",
            "binary_name": "bind9-utils"
        },
        {
            "binary_version": "1:9.16.48-0ubuntu0.20.04.1",
            "binary_name": "bind9utils"
        },
        {
            "binary_version": "1:9.16.48-0ubuntu0.20.04.1",
            "binary_name": "dnsutils"
        }
    ]
}

Database specific

{
    "cves_map": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "cves": [
            {
                "severity": [
                    {
                        "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "type": "CVSS_V3"
                    },
                    {
                        "score": "medium",
                        "type": "Ubuntu"
                    }
                ],
                "id": "CVE-2023-4408"
            },
            {
                "severity": [
                    {
                        "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "type": "CVSS_V3"
                    },
                    {
                        "score": "medium",
                        "type": "Ubuntu"
                    }
                ],
                "id": "CVE-2023-5517"
            },
            {
                "severity": [
                    {
                        "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "type": "CVSS_V3"
                    },
                    {
                        "score": "medium",
                        "type": "Ubuntu"
                    }
                ],
                "id": "CVE-2023-6516"
            },
            {
                "severity": [
                    {
                        "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "type": "CVSS_V3"
                    },
                    {
                        "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "type": "CVSS_V3"
                    },
                    {
                        "score": "medium",
                        "type": "Ubuntu"
                    }
                ],
                "id": "CVE-2023-50387"
            },
            {
                "severity": [
                    {
                        "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                        "type": "CVSS_V3"
                    },
                    {
                        "score": "medium",
                        "type": "Ubuntu"
                    }
                ],
                "id": "CVE-2023-50868"
            }
        ]
    }
}