Vulnerability Report

CVE-2016-2774

Title: Isc Dhcp Denial of Service (DoS)

DoS

Proof Of Concept

No public PoC currently indexed for CVE-2016-2774.

CWE Category CWE-20
Published Date Mar 09, 2016
Modified Date May 06, 2026
Exploit Status Not Found
Score 5.9 CVSS v3.1
Exploit Probability (EPSS)
65.58%

Vulnerability Summary

CVE-2016-2774: 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.

Impacted Vendors

I
isc 1

Reference Links

http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183458.html http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183640.html http://lists.opensuse.org/opensuse-updates/2016-07/msg00066.html http://rhn.redhat.com/errata/RHSA-2016-2590.html http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html http://www.securityfocus.com/bid/84208 http://www.securitytracker.com/id/1035196 https://kb.isc.org/article/AA-01354 https://lists.debian.org/debian-lts-announce/2019/11/msg00023.html https://usn.ubuntu.com/3586-1/ http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183458.html http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183640.html http://lists.opensuse.org/opensuse-updates/2016-07/msg00066.html http://rhn.redhat.com/errata/RHSA-2016-2590.html http://www.oracle.com/technetwork/topics/security/bulletinjul2016-3090568.html http://www.securityfocus.com/bid/84208 http://www.securitytracker.com/id/1035196 https://kb.isc.org/article/AA-01354 https://lists.debian.org/debian-lts-announce/2019/11/msg00023.html https://usn.ubuntu.com/3586-1/
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
5.9
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.1
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:M/Au:N/C:N/I:N/A:C

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2016-2774 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Stack

No specific products linked.