5.8
MEDIUM
CVE-2023-20071
Cisco Snort FTP Module Policy Bypass Vulnerability
Description

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.

INFO

Published Date :

Nov. 1, 2023, 6:15 p.m.

Last Modified :

Jan. 25, 2024, 5:15 p.m.

Remotely Exploitable :

Yes !

Impact Score :

1.4

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2023-20071 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Cisco firepower_threat_defense
2 Cisco umbrella_insights_virtual_appliance
3 Cisco unified_threat_defense
4 Cisco cyber_vision
5 Cisco meraki_mx_security_appliance_firmware
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-20071.

URL Resource
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-ftd-zXYtnjOM Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-20071 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-20071 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Jan. 25, 2024

    Action Type Old Value New Value
    Added CWE Cisco Systems, Inc. CWE-1039
  • Reanalysis by [email protected]

    Nov. 09, 2023

    Action Type Old Value New Value
    Removed CPE Configuration OR *cpe:2.3:a:snort:snort:*:*:*:*:*:*:*:* versions up to (excluding) 3.1.32.0
  • Initial Analysis by [email protected]

    Nov. 09, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
    Changed Reference Type https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-ftd-zXYtnjOM No Types Assigned https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-ftd-zXYtnjOM Vendor Advisory
    Added CWE NIST NVD-CWE-noinfo
    Added CPE Configuration AND OR *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions up to (excluding) 6.4.0.17 *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 6.5.0 up to (excluding) 7.0.6 *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 7.1.0 up to (excluding) 7.2.4 *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 7.3.0 up to (excluding) 7.3.1.2 OR cpe:2.3:a:snort:snort:2.0:-:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 6.7.0 up to (excluding) 7.0.5 *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 7.1.0 up to (excluding) 7.1.0.3 *cpe:2.3:a:cisco:firepower_threat_defense:*:*:*:*:*:*:*:* versions from (including) 7.2.0 up to (excluding) 7.2.1 OR cpe:2.3:a:snort:snort:*:*:*:*:*:*:*:* versions up to (excluding) 3.1.32.0
    Added CPE Configuration OR *cpe:2.3:a:cisco:cyber_vision:*:*:*:*:*:*:*:* versions up to (excluding) 4.1.3
    Added CPE Configuration OR *cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:* versions from (including) 17.3 up to (excluding) 17.3.8 *cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:* versions from (including) 17.6 up to (excluding) 17.6.6 *cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:* versions from (including) 17.9 up to (excluding) 17.9.4 *cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:* versions from (including) 17.11 up to (excluding) 17.11.1a *cpe:2.3:a:cisco:unified_threat_defense:*:*:*:*:*:*:*:* versions from (including) 17.12 up to (excluding) 17.12.1a
    Added CPE Configuration OR *cpe:2.3:o:cisco:meraki_mx_security_appliance_firmware:-:*:*:*:*:*:*:*
    Added CPE Configuration OR *cpe:2.3:a:snort:snort:*:*:*:*:*:*:*:* versions up to (excluding) 3.1.32.0
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-20071 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-20071 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.06 }} 0.02%

score

0.25296

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability