CVE-2018-15443 MEDIUM

CVE-2018-15443: Cisco Firepower Detection Engine TCP Intrusion Prevention System Rule Bypass Vulnerability

Vendor Cisco
Product Cisco Firepower Management Center
Weakness CWE-400
Published November 8, 2018
Last update November 26, 2024
View on NVD All CVEs

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 detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass a configured Intrusion Prevention System (IPS) rule that inspects certain types of TCP traffic. The vulnerability is due to incorrect TCP retransmission handling. An attacker could exploit this vulnerability by sending a crafted TCP connection request through an affected device. A successful exploit could allow the attacker to bypass configured IPS rules and allow uninspected traffic onto the network.

Key dates

02Disclosure timeline

November 8, 2018 CVE published
November 26, 2024 Record updated