Cisco Snort ACL Logic Error Enables Policy Bypass
CVE-2023-20246 Published on November 1, 2023

Multiple Cisco products are affected by a vulnerability in Snort access control policies that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. This vulnerability is due to a logic error that occurs when the access control policies are being populated. An attacker could exploit this vulnerability by establishing a connection to an affected device. A successful exploit could allow the attacker to bypass configured access control rules on the affected system.

NVD

Vulnerability Analysis

CVE-2023-20246 is exploitable 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

Authentication Bypass by Spoofing

This attack-focused weakness is caused by improperly implemented authentication schemes that are subject to spoofing attacks.


Products Associated with CVE-2023-20246

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2023-20246 are published in these products:

Snort
 
Cisco Unified Threat Defense
 
Cisco IOS XE
 
Cisco Firepower Threat Defense
 
Cisco Snort
 

Affected Versions

Cisco Firepower Threat Defense Software: Cisco Umbrella Insights Virtual Appliance:

Exploit Probability

EPSS
0.07%
Percentile
20.15%

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.