Detections
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Cisco Firepower Threat Defense Software SSL/TLS Client DoS (cisco-sa-ssl-client-dos-cCrQPkA)

medium Nessus Plugin ID 178101

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Synopsis

The remote device is missing a vendor-supplied security patch

Description

According to its self-reported version, Cisco Firepower Threat Defense (FTD) Software is affected by a denial of service (DoS) vulnerability in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) handler of Cisco FTD Software. This vulnerability is due to improper memory management when a device initiates SSL/TLS connections. An attacker could exploit this vulnerability by ensuring that the device will connect to an SSL/TLS server that is using specific encryption parameters. A successful exploit could allow the attacker to cause the affected device to unexpectedly reload, resulting in a DoS condition.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug IDs CSCvz98540

See Also

http://www.nessus.org/u?99193417

https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74838

Plugin Details

Severity: Medium

ID: 178101

File Name: cisco-sa-ssl-client-dos-cCrQPkA-ftd.nasl

Version: 1.2

Type: local

Family: CISCO

Published: 7/10/2023

Updated: 7/18/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2022-20927

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/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:/a:cisco:firepower_threat_defense

Required KB Items: installed_sw/Cisco Firepower Threat Defense

Exploit Ease: No known exploits are available

Patch Publication Date: 11/9/2022

Vulnerability Publication Date: 11/9/2022

Reference Information

CVE: CVE-2022-20927

CWE: 119

CISCO-SA: cisco-sa-ssl-client-dos-cCrQPkA

IAVA: 2022-A-0486, 2022-A-0487-S

CISCO-BUG-ID: CSCvz98540