Cisco FTD Software DHCP DoS (cisco-sa-asaftd-dos-qk8cTGLz)

high Nessus Plugin ID 138376

Synopsis

The remote device is missing a vendor-supplied security patch.

Description

According to its self-reported version, Cisco FTD Software is affected by a denial-of-service (DoS) vulnerability in the DHCP component due to incorrect processing of certain DHCP packets. An authenticated, remote attacker can exploit this, by sending a crafted DHCP packet to the affected device, to cause the device to stop responding.

Please see the included Cisco BID and Cisco Security Advisory for more information.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvq41939.

See Also

http://www.nessus.org/u?23cb221b

https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq41939

Plugin Details

Severity: High

ID: 138376

File Name: cisco-sa-ftd-dos-qk8cTGLz.nasl

Version: 1.7

Type: local

Family: CISCO

Published: 7/10/2020

Updated: 3/31/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2020-3306

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:firepower_threat_defense

Required KB Items: installed_sw/Cisco Firepower Threat Defense, Host/Cisco/Firepower

Exploit Ease: No known exploits are available

Patch Publication Date: 5/6/2020

Vulnerability Publication Date: 5/6/2020

Reference Information

CVE: CVE-2020-3306

CISCO-SA: cisco-sa-asaftd-dos-qk8cTGLz

IAVA: 2020-A-0205-S

CISCO-BUG-ID: CSCvq41939