CVE-2016-2774
Summary
| CVE | CVE-2016-2774 |
|---|---|
| State | PUBLISHED |
| Assigner | mitre |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2016-03-09 15:59:00 UTC |
| Updated | 2026-05-06 22:30:45 UTC |
| 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. |
Risk And Classification
Primary CVSS: v3.1 5.9 MEDIUM from [email protected]
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Problem Types: CWE-20 | n/a
| Version | Source | Type | Score | Severity | Vector |
|---|---|---|---|---|---|
| 3.1 | [email protected] | Primary | 5.9 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
| 2.0 | [email protected] | Primary | 7.1 | AV:N/AC:M/Au:N/C:N/I:N/A:C |
CVSS v3.1 Breakdown
Attack Vector
NetworkAttack Complexity
HighPrivileges Required
NoneUser Interaction
NoneScope
UnchangedConfidentiality
NoneIntegrity
NoneAvailability
HighCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v2.0 Breakdown
Access Vector
NetworkAccess Complexity
MediumAuthentication
NoneConfidentiality
NoneIntegrity
NoneAvailability
CompleteAV:N/AC:M/Au:N/C:N/I:N/A:C
NVD Known Affected Configurations (CPE 2.3)
| Type | Vendor | Product | Version | Update | Edition | Language |
|---|---|---|---|---|---|---|
| Operating System | Canonical | Ubuntu Linux | 14.04 | All | All | All |
| Operating System | Canonical | Ubuntu Linux | 16.04 | All | All | All |
| Operating System | Canonical | Ubuntu Linux | 17.10 | All | All | All |
| Operating System | Debian | Debian Linux | 8.0 | All | All | All |
| Application | Isc | Dhcp | 4.1-esv | - | All | All |
| Application | Isc | Dhcp | 4.1-esv | r1 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r10 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r10_b1 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r11_b1 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r11_rc1 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r11_rc2 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r12 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r12_b1 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r2 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r3 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r3_b1 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r4 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r5 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r5_b1 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r5_rc1 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r5_rc2 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r6 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r7 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r8 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r8_b1 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r8_rc1 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r9 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r9_b1 | All | All |
| Application | Isc | Dhcp | 4.1-esv | r9_rc1 | All | All |
| Application | Isc | Dhcp | 4.1-esv | rc1 | All | All |
| Application | Isc | Dhcp | 4.1.0 | - | All | All |
| Application | Isc | Dhcp | 4.1.0 | a1 | All | All |
| Application | Isc | Dhcp | 4.1.0 | a2 | All | All |
| Application | Isc | Dhcp | 4.1.0 | b1 | All | All |
| Application | Isc | Dhcp | 4.1.1 | - | All | All |
| Application | Isc | Dhcp | 4.1.1 | b1 | All | All |
| Application | Isc | Dhcp | 4.1.1 | b2 | All | All |
| Application | Isc | Dhcp | 4.1.1 | b3 | All | All |
| Application | Isc | Dhcp | 4.1.1 | p1 | All | All |
| Application | Isc | Dhcp | 4.1.1 | rc1 | All | All |
| Application | Isc | Dhcp | 4.1.2 | - | All | All |
| Application | Isc | Dhcp | 4.1.2 | b1 | All | All |
| Application | Isc | Dhcp | 4.1.2 | p1 | All | All |
| Application | Isc | Dhcp | 4.1.2 | rc1 | All | All |
| Application | Isc | Dhcp | 4.2.0 | - | All | All |
| Application | Isc | Dhcp | 4.2.0 | a1 | All | All |
| Application | Isc | Dhcp | 4.2.0 | a2 | All | All |
| Application | Isc | Dhcp | 4.2.0 | b1 | All | All |
| Application | Isc | Dhcp | 4.2.0 | b2 | All | All |
| Application | Isc | Dhcp | 4.2.0 | p1 | All | All |
| Application | Isc | Dhcp | 4.2.0 | p2 | All | All |
| Application | Isc | Dhcp | 4.2.0 | rc1 | All | All |
| Application | Isc | Dhcp | 4.2.1 | - | All | All |
| Application | Isc | Dhcp | 4.2.1 | b1 | All | All |
| Application | Isc | Dhcp | 4.2.1 | p1 | All | All |
| Application | Isc | Dhcp | 4.2.1 | rc1 | All | All |
| Application | Isc | Dhcp | 4.2.2 | - | All | All |
| Application | Isc | Dhcp | 4.2.2 | b1 | All | All |
| Application | Isc | Dhcp | 4.2.2 | rc1 | All | All |
| Application | Isc | Dhcp | 4.2.3 | - | All | All |
| Application | Isc | Dhcp | 4.2.3 | p1 | All | All |
| Application | Isc | Dhcp | 4.2.3 | p2 | All | All |
| Application | Isc | Dhcp | 4.2.4 | - | All | All |
| Application | Isc | Dhcp | 4.2.4 | b1 | All | All |
| Application | Isc | Dhcp | 4.2.4 | p1 | All | All |
| Application | Isc | Dhcp | 4.2.4 | p2 | All | All |
| Application | Isc | Dhcp | 4.2.4 | rc1 | All | All |
| Application | Isc | Dhcp | 4.2.4 | rc2 | All | All |
| Application | Isc | Dhcp | 4.2.5 | - | All | All |
| Application | Isc | Dhcp | 4.2.5 | b1 | All | All |
| Application | Isc | Dhcp | 4.2.5 | p1 | All | All |
| Application | Isc | Dhcp | 4.2.5 | rc1 | All | All |
| Application | Isc | Dhcp | 4.2.6 | - | All | All |
| Application | Isc | Dhcp | 4.2.6 | b1 | All | All |
| Application | Isc | Dhcp | 4.2.6 | rc1 | All | All |
| Application | Isc | Dhcp | 4.2.7 | - | All | All |
| Application | Isc | Dhcp | 4.2.7 | b1 | All | All |
| Application | Isc | Dhcp | 4.2.7 | rc1 | All | All |
| Application | Isc | Dhcp | 4.2.8 | - | All | All |
| Application | Isc | Dhcp | 4.2.8 | b1 | All | All |
| Application | Isc | Dhcp | 4.2.8 | rc1 | All | All |
| Application | Isc | Dhcp | 4.2.8 | rc2 | All | All |
| Application | Isc | Dhcp | 4.3.0 | - | All | All |
| Application | Isc | Dhcp | 4.3.0 | a1 | All | All |
| Application | Isc | Dhcp | 4.3.0 | b1 | All | All |
| Application | Isc | Dhcp | 4.3.0 | rc1 | All | All |
| Application | Isc | Dhcp | 4.3.1 | - | All | All |
| Application | Isc | Dhcp | 4.3.1 | b1 | All | All |
| Application | Isc | Dhcp | 4.3.1 | rc1 | All | All |
| Application | Isc | Dhcp | 4.3.2 | - | All | All |
| Application | Isc | Dhcp | 4.3.2 | b1 | All | All |
| Application | Isc | Dhcp | 4.3.2 | rc1 | All | All |
| Application | Isc | Dhcp | 4.3.2 | rc2 | All | All |
| Application | Isc | Dhcp | 4.3.3 | - | All | All |
| Application | Isc | Dhcp | 4.3.3 | b1 | All | All |
Vendor Declared Affected Products
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| ISC DHCP CVE-2016-2774 Remote Denial of Service Vulnerability | af854a3a-2127-422b-91ae-364da2661108 | www.securityfocus.com | Third Party Advisory, VDB Entry |
| [SECURITY] Fedora 24 Update: dhcp-4.3.4-1.fc24 | af854a3a-2127-422b-91ae-364da2661108 | lists.fedoraproject.org | Third Party Advisory |
| [SECURITY] Fedora 23 Update: dhcp-4.3.3-9.P1.fc23 | af854a3a-2127-422b-91ae-364da2661108 | lists.fedoraproject.org | Third Party Advisory |
| [SECURITY] [DLA 2003-1] isc-dhcp security update | af854a3a-2127-422b-91ae-364da2661108 | lists.debian.org | Third Party Advisory |
| DHCP IPC Connection Management Flaw Lets Remote Users on the Local Network Consume Excessive Resources on the Target System - SecurityTracker | af854a3a-2127-422b-91ae-364da2661108 | www.securitytracker.com | Third Party Advisory, VDB Entry |
| USN-3586-1: DHCP vulnerabilities | Ubuntu security notices | Ubuntu | af854a3a-2127-422b-91ae-364da2661108 | usn.ubuntu.com | Third Party Advisory |
| Oracle Solaris Bulletin - July 2016 | af854a3a-2127-422b-91ae-364da2661108 | www.oracle.com | Third Party Advisory |
| CVE-2016-2774: An attacker who is allowed to connect to DHCP inter-server communications and control channels can exhaust server resources | Internet Systems Consortium Knowledge Base | af854a3a-2127-422b-91ae-364da2661108 | kb.isc.org | Vendor Advisory |
| openSUSE-SU-2016:1843-1: moderate: Security update for dhcp | af854a3a-2127-422b-91ae-364da2661108 | lists.opensuse.org | Mailing List, Third Party Advisory |
| Red Hat Customer Portal | af854a3a-2127-422b-91ae-364da2661108 | rhn.redhat.com | Third Party Advisory |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.