Unauth Remote FTP Bypass via Snort DCE on Cisco ASA
CVE-2023-20071 Published on November 1, 2023

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.

NVD

Vulnerability Analysis

CVE-2023-20071 can be exploited with network access, and does not require authorization privileges or user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity, and no impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
CHANGED
Confidentiality Impact:
NONE
Integrity Impact:
LOW
Availability Impact:
NONE

Weakness Type

Automated Recognition Mechanism with Inadequate Detection or Handling of Adversarial Input Perturbations

The product uses an automated mechanism such as machine learning to recognize complex data inputs (e.g. image or audio) as a particular concept or category, but it does not properly detect or handle inputs that have been modified or constructed in a way that causes the mechanism to detect a different, incorrect concept.


Products Associated with CVE-2023-20071

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2023-20071 are published in these products:

Cisco Cyber Vision
 
Cisco Unified Threat Defense
 
Cisco Meraki Mx Security Appliance Firmware
 

Affected Versions

Cisco Firepower Threat Defense Software: Cisco Umbrella Insights Virtual Appliance: Cisco Cyber Vision: Cisco UTD SNORT IPS Engine Software:

Exploit Probability

EPSS
0.05%
Percentile
14.45%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.