CVE-2019-1833 MEDIUM

CVE-2019-1833: Cisco Firepower Threat Defense Software SSL/TLS Policy Bypass Vulnerability

Vendor Cisco
Product Cisco Firepower Threat Defense Software
Weakness CWE-693
Published May 16, 2019
Last update November 19, 2024

CVSS base score

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

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

What the vulnerability does

01Description

A vulnerability in the Secure Sockets Layer (SSL)/Transport Layer Security (TLS) protocol parser of Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured policies. The vulnerability is due to improper parsing of specific attributes in a TLS packet header. An attacker could exploit this vulnerability by sending malicious TLS messages to the affected system. A successful exploit could allow the attacker to bypass the configured policies for the system, which could allow traffic to flow through without being inspected.

Key dates

02Disclosure timeline

May 16, 2019 CVE published
November 19, 2024 Record updated