CVE-2016-2774

Scores

EPSS

0.656medium65.6%
0%20%40%60%80%100%

Percentile: 65.6%

CVSS

5.9medium3.x
0246810

CVSS Score: 5.9/10

All CVSS Scores

CVSS 3.x
5.9

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

CVSS 2.0
2.6

Vector: AV:N/AC:H/Au:N/C:N/I:N/A:P

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.

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Sources

debiannvdredhatubuntu

CWEs

CWE-20CWE-400

Recommendations

Source: nvd

For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258

URL: http://rhn.redhat.com/errata/RHSA-2016-2590.html

Vulnerable Software (19)

Type: Configuration

Product: dhcp

Operating System: rhel 7

Trait:
{  "fixed": "4.2.5-47.el7"}

Source: redhat

Type: Configuration

Product: isc-dhcp

Operating System: debian

Trait:
{  "fixed": "4.3.4-1"}

Source: debian

Type: Configuration

Product: isc-dhcp

Operating System: debian wheezy 7

Trait:
{  "unfixed": true}

Source: debian

Type: Configuration

Product: isc-dhcp

Operating System: ubuntu artful 17.10

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: isc-dhcp

Operating System: ubuntu bionic 18.04

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: isc-dhcp

Operating System: ubuntu cosmic 18.10

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: isc-dhcp

Operating System: ubuntu disco 19.04

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: isc-dhcp

Operating System: ubuntu eoan 19.10

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: isc-dhcp

Operating System: ubuntu focal 20.04

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: isc-dhcp

Operating System: ubuntu groovy 20.10

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: isc-dhcp

Operating System: ubuntu hirsute 21.04

Trait:
{  "unaffected": true}

Source: ubuntu

Type: Configuration

Product: isc-dhcp

Operating System: ubuntu trusty 14.04

Trait:
{  "fixed": "4.2.4-7ubuntu12.12"}

Source: ubuntu

Type: Configuration

Product: isc-dhcp

Operating System: ubuntu wily 15.10

Trait:
{  "unfixed": true}

Source: ubuntu

Type: Configuration

Product: isc-dhcp

Operating System: ubuntu xenial 16.04

Trait:
{  "fixed": "4.3.3-5ubuntu12.9"}

Source: ubuntu

Type: Configuration

Product: isc-dhcp

Operating System: ubuntu yakkety 16.10

Trait:
{  "unfixed": true}

Source: ubuntu

Type: Configuration

Product: isc-dhcp

Operating System: ubuntu zesty 17.04

Trait:
{  "unfixed": true}

Source: ubuntu

Type: Configuration

Vendor: *

Product: debian_linux

Operating System: * * *

Trait:
{  "cpe_match": [    {      "cpe23uri": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",      "vulnerable": true    }  ],  "operator": "OR"}

Source: nvd

Type: Configuration

Vendor: *

Product: dhcp

Operating System: * * *

Trait:
{  "cpe_match": [    {      "cpe23uri": "cpe:2.3:a:isc:dhcp:4.1-esv:-:*:*:*:*:*:*",      "vulnerable": true    },    {      "cpe23uri": "cpe:2.3:a:isc:dhcp:4.1-esv:r1:*:*:*:*:*:*",      "vulne...

Source: nvd

Type: Configuration

Vendor: *

Product: ubuntu_linux

Operating System: * * *

Trait:
{  "cpe_match": [    {      "cpe23uri": "cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",      "vulnerable": true    },    {      "cpe23uri": "cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*...

Source: nvd

End of list