UBUNTU-CVE-2019-6470

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Source
https://ubuntu.com/security/CVE-2019-6470
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-6470.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2019-6470
Related
Published
2019-05-03T00:00:00Z
Modified
2019-05-03T00:00:00Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

There had existed in one of the ISC BIND libraries a bug in a function that was used by dhcpd when operating in DHCPv6 mode. There was also a bug in dhcpd relating to the use of this function per its documentation, but the bug in the library function prevented this from causing any harm. All releases of dhcpd from ISC contain copies of this, and other, BIND libraries in combinations that have been tested prior to release and are known to not present issues like this. Some third-party packagers of ISC software have modified the dhcpd source, BIND source, or version matchup in ways that create the crash potential. Based on reports available to ISC, the crash probability is large and no analysis has been done on how, or even if, the probability can be manipulated by an attacker. Affects: Builds of dhcpd versions prior to version 4.4.1 when using BIND versions 9.11.2 or later, or BIND versions with specific bug fixes backported to them. ISC does not have access to comprehensive version lists for all repackagings of dhcpd that are vulnerable. In particular, builds from other vendors may also be affected. Operators are advised to consult their vendor documentation.

References

Affected packages

Ubuntu:18.04:LTS / isc-dhcp

Package

Name
isc-dhcp
Purl
pkg:deb/ubuntu/isc-dhcp?arch=src?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 

{
    "availability": "No subscription required",
    "ubuntu_priority": "medium",
    "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-dbgsym"
        },
        {
            "binary_version": "4.3.5-3ubuntu7.1",
            "binary_name": "isc-dhcp-client-ddns"
        },
        {
            "binary_version": "4.3.5-3ubuntu7.1",
            "binary_name": "isc-dhcp-client-ddns-dbgsym"
        },
        {
            "binary_version": "4.3.5-3ubuntu7.1",
            "binary_name": "isc-dhcp-client-udeb"
        },
        {
            "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-relay-dbgsym"
        },
        {
            "binary_version": "4.3.5-3ubuntu7.1",
            "binary_name": "isc-dhcp-server"
        },
        {
            "binary_version": "4.3.5-3ubuntu7.1",
            "binary_name": "isc-dhcp-server-dbgsym"
        },
        {
            "binary_version": "4.3.5-3ubuntu7.1",
            "binary_name": "isc-dhcp-server-ldap"
        },
        {
            "binary_version": "4.3.5-3ubuntu7.1",
            "binary_name": "isc-dhcp-server-ldap-dbgsym"
        }
    ]
}