CVE-2023-20270 MEDIUM

CVE-2023-20270

Vendor Cisco
Product Cisco Firepower Threat Defense Software
Weakness CWE-20 · Input validation
Published November 1, 2023
Last update August 2, 2024

CVSS base score

5.8/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

What the vulnerability does

01Description

A vulnerability in the interaction between the Server Message Block (SMB) protocol preprocessor and the Snort 3 detection engine for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass the configured policies or cause a denial of service (DoS) condition on an affected device. This vulnerability is due to improper error-checking when the Snort 3 detection engine is processing SMB traffic. An attacker could exploit this vulnerability by sending a crafted SMB packet stream through an affected device. A successful exploit could allow the attacker to cause the Snort process to reload, resulting in a DoS condition.

Key dates

02Disclosure timeline

November 1, 2023 CVE published
August 2, 2024 Record updated