CVE-2016-2774

MEDIUM

ISC Dhcp - Improper Input Validation

Title source: rule

Description

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 (10)

[Third Party Advisory] http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183458.html

[Third Party Advisory] http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183640.html

[Mailing List, Third Party Advisory] http://lists.opensuse.org/opensuse-updates/2016-07/msg00066.html

[Third Party Advisory] http://rhn.redhat.com/errata/RHSA-2016-2590.html

[Third Party Advisory] http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/84208

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1035196

[Vendor Advisory] https://kb.isc.org/article/AA-01354

[Third Party Advisory] https://lists.debian.org/debian-lts-announce/2019/11/msg00023.html

[Third Party Advisory] https://usn.ubuntu.com/3586-1/

Scores

CVSS v3 5.9

EPSS 0.5698

EPSS Percentile 98.1%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

CWE

CWE-20

Status draft

Affected Products (50)

isc/dhcp

isc/dhcp

isc/dhcp

isc/dhcp

isc/dhcp

isc/dhcp

isc/dhcp

isc/dhcp

isc/dhcp

isc/dhcp

isc/dhcp

isc/dhcp

isc/dhcp

isc/dhcp

isc/dhcp

... and 35 more

Timeline

Published Mar 09, 2016

Tracked Since Feb 18, 2026