UBUNTU-CVE-2016-2774

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Source
https://ubuntu.com/security/CVE-2016-2774
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2016/UBUNTU-CVE-2016-2774.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2016-2774
Upstream
Downstream
Related
Published
2016-03-09T00:00:00Z
Modified
2025-09-08T16:43:39Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - low
Summary
[none]
Details

ISC DHCP 4.1.x before 4.1-ESV-R13 and 4.2.x and 4.3.x before 4.3.4 does not restrict the number of concurrent TCP sessions, which allows remote attackers to cause a denial of service (INSIST assertion failure or request-processing outage) by establishing many sessions.

References

Affected packages

Ubuntu:14.04:LTS / isc-dhcp

Package

Name
isc-dhcp
Purl
pkg:deb/ubuntu/isc-dhcp@4.2.4-7ubuntu12.12?arch=source&distro=trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.2.4-7ubuntu12.12

Affected versions

4.*

4.2.4-7ubuntu8
4.2.4-7ubuntu9
4.2.4-7ubuntu10
4.2.4-7ubuntu11
4.2.4-7ubuntu12
4.2.4-7ubuntu12.1
4.2.4-7ubuntu12.2
4.2.4-7ubuntu12.3
4.2.4-7ubuntu12.4
4.2.4-7ubuntu12.5
4.2.4-7ubuntu12.6
4.2.4-7ubuntu12.7
4.2.4-7ubuntu12.8
4.2.4-7ubuntu12.9
4.2.4-7ubuntu12.10

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.2.4-7ubuntu12.12",
            "binary_name": "isc-dhcp-client"
        },
        {
            "binary_version": "4.2.4-7ubuntu12.12",
            "binary_name": "isc-dhcp-client-noddns"
        },
        {
            "binary_version": "4.2.4-7ubuntu12.12",
            "binary_name": "isc-dhcp-common"
        },
        {
            "binary_version": "4.2.4-7ubuntu12.12",
            "binary_name": "isc-dhcp-dev"
        },
        {
            "binary_version": "4.2.4-7ubuntu12.12",
            "binary_name": "isc-dhcp-relay"
        },
        {
            "binary_version": "4.2.4-7ubuntu12.12",
            "binary_name": "isc-dhcp-server"
        },
        {
            "binary_version": "4.2.4-7ubuntu12.12",
            "binary_name": "isc-dhcp-server-ldap"
        }
    ],
    "availability": "No subscription required"
}

Ubuntu:16.04:LTS / isc-dhcp

Package

Name
isc-dhcp
Purl
pkg:deb/ubuntu/isc-dhcp@4.3.3-5ubuntu12.9?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
4.3.3-5ubuntu12.9

Affected versions

4.*

4.3.1-5ubuntu3
4.3.1-5ubuntu4
4.3.1-5ubuntu5
4.3.3-5ubuntu1
4.3.3-5ubuntu2
4.3.3-5ubuntu4
4.3.3-5ubuntu5
4.3.3-5ubuntu7
4.3.3-5ubuntu8
4.3.3-5ubuntu9
4.3.3-5ubuntu10
4.3.3-5ubuntu11
4.3.3-5ubuntu12
4.3.3-5ubuntu12.1
4.3.3-5ubuntu12.3
4.3.3-5ubuntu12.4
4.3.3-5ubuntu12.6
4.3.3-5ubuntu12.7

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "4.3.3-5ubuntu12.9",
            "binary_name": "isc-dhcp-client"
        },
        {
            "binary_version": "4.3.3-5ubuntu12.9",
            "binary_name": "isc-dhcp-client-ddns"
        },
        {
            "binary_version": "4.3.3-5ubuntu12.9",
            "binary_name": "isc-dhcp-common"
        },
        {
            "binary_version": "4.3.3-5ubuntu12.9",
            "binary_name": "isc-dhcp-dev"
        },
        {
            "binary_version": "4.3.3-5ubuntu12.9",
            "binary_name": "isc-dhcp-relay"
        },
        {
            "binary_version": "4.3.3-5ubuntu12.9",
            "binary_name": "isc-dhcp-server"
        },
        {
            "binary_version": "4.3.3-5ubuntu12.9",
            "binary_name": "isc-dhcp-server-ldap"
        }
    ],
    "availability": "No subscription required"
}