USN-3973-1

It was discovered that DHCP, when built with a mismatched external BIND library, incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause DHCP to crash, resulting in a denial of service.

References

Affected packages

Ubuntu:18.04:LTS / isc-dhcp

Package

Name: isc-dhcp
Purl: pkg:deb/ubuntu/isc-dhcp@4.3.5-3ubuntu7.1?arch=source&distro=bionic

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

4.3.5-3ubuntu7.1

Affected versions

4.*

4.3.5-3ubuntu2

4.3.5-3ubuntu3

4.3.5-3ubuntu4

4.3.5-3ubuntu5

4.3.5-3ubuntu6

4.3.5-3ubuntu7

Ecosystem specific

{
    "binaries": [
        {
            "binary_version": "4.3.5-3ubuntu7.1",
            "binary_name": "isc-dhcp-client"
        },
        {
            "binary_version": "4.3.5-3ubuntu7.1",
            "binary_name": "isc-dhcp-client-ddns"
        },
        {
            "binary_version": "4.3.5-3ubuntu7.1",
            "binary_name": "isc-dhcp-common"
        },
        {
            "binary_version": "4.3.5-3ubuntu7.1",
            "binary_name": "isc-dhcp-dev"
        },
        {
            "binary_version": "4.3.5-3ubuntu7.1",
            "binary_name": "isc-dhcp-relay"
        },
        {
            "binary_version": "4.3.5-3ubuntu7.1",
            "binary_name": "isc-dhcp-server"
        },
        {
            "binary_version": "4.3.5-3ubuntu7.1",
            "binary_name": "isc-dhcp-server-ldap"
        }
    ],
    "availability": "No subscription required"
}

Database specific

source

"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-3973-1.json"

cves_map

{
    "cves": [
        {
            "severity": [
                {
                    "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": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
                },
                {
                    "type": "Ubuntu",
                    "score": "medium"
                }
            ],
            "id": "CVE-2019-6470"
        }
    ],
    "ecosystem": "Ubuntu:18.04:LTS"
}