CVE-2023-20071: Medium severity cisco secure firewall threat defense vulnerability

Published Nov 1, 2023
·
Updated

Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. This vulnerability is due to a flaw in the FTP module of the Snort detection engine. An attacker could exploit this vulnerability by sending crafted FTP traffic through an affected device. A successful exploit could allow the attacker to bypass FTP inspection and deliver a malicious payload.

Affected Software

16 affected components
All of the following
Any of the following
Cisco Firepower Threat Defense<6.4.0.17
Cisco Firepower Threat Defense>=6.5.0<7.0.6
Cisco Firepower Threat Defense>=7.1.0<7.2.4
Cisco Firepower Threat Defense>=7.3.0<7.3.1.2
Snort Snort=2.0
All of the following
Any of the following
Cisco Firepower Threat Defense>=6.7.0<7.0.5
Cisco Firepower Threat Defense>=7.1.0<7.1.0.3
Cisco Firepower Threat Defense>=7.2.0<7.2.1
Snort Snort<3.1.32.0
Cisco Cyber Vision<4.1.3
Cisco Unified Threat Defense>=17.3<17.3.8
Cisco Unified Threat Defense>=17.6<17.6.6
Cisco Unified Threat Defense>=17.9<17.9.4
Cisco Unified Threat Defense>=17.11<17.11.1a
Cisco Unified Threat Defense>=17.12<17.12.1a
Cisco Meraki Mx Security Appliance Firmware

Event History

Nov 1, 2023
CVE Published
via MITRE·05:07 PM
Data Sourced
via MITRE·05:07 PM
DescriptionSeverityWeakness
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Frequently Asked Questions

1

What is the vulnerability ID for this Cisco vulnerability?

The vulnerability ID for this Cisco vulnerability is CVE-2023-20071.

2

What is the severity of CVE-2023-20071?

The severity of CVE-2023-20071 is medium, with a severity value of 5.8.

3

Which Cisco products are affected by CVE-2023-20071?

The affected Cisco products include Cisco Firepower Threat Defense, Cisco Cyber Vision, Cisco Unified Threat Defense, and Cisco Meraki Mx Security Appliance Firmware.

4

What is the vulnerability in the Snort detection engine?

The vulnerability in the Snort detection engine allows an unauthenticated, remote attacker to bypass the configured policies on an affected system.

5

How can an attacker exploit CVE-2023-20071?

An attacker can exploit CVE-2023-20071 by exploiting a flaw in the FTP module of the Snort detection engine.

Contact

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