Cisco Firepower Threat Defense Software SSL Input Validation DoS (cisco-sa-ftd-ssl-mf3822Z)

Medium Nessus Plugin ID 142364

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VPR Score: 3.6


The remote device is missing a vendor-supplied security patch


According to its self-reported version, Cisco Firepower Threat Defense Software is affected by a denial of service (DoS) vulnerability in its ssl_inspection component due to insuffient user input validation. An unauthenticated, remote attacker can exploit this issue, by sending malformed TLS packets to an affected device, to impose on a DoS condition on Snort instances.

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


Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvs28290

See Also

Plugin Details

Severity: Medium

ID: 142364

File Name: cisco-sa-ftd-ssl-mf3822Z.nasl

Version: 1.4

Type: local

Family: CISCO

Published: 2020/11/03

Updated: 2020/11/04

Dependencies: 131952, 11936, 12634, 128052

Risk Information

Risk Factor: Medium

VPR Score: 3.6

CVSS Score Source: CVE-2020-3317

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2020/10/21

Vulnerability Publication Date: 2020/10/21

Reference Information

CVE: CVE-2020-3317


CISCO-SA: cisco-sa-ftd-ssl-mf3822Z

IAVA: 2020-A-0488

CWE: 20