CVE-2018-15443

published 2018-11-08

CVE-2018-15443: A vulnerability in the detection engine of Cisco Firepower System Software could allow an unauthenticated, remote attacker to bypass a configured Intrusion…

Priority P3 48 high 7.5 CVSS 3.0

AV N AC L PR N UI N S U C N I H A N

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.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
cisco	cisco_firepower_management_center	—	—
cisco	firepower_detection_engine_tcp_intrusion_prevention_system_rule	—	—

CVSS provenance

nvd v3.0 7.5 HIGH CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

nvd v2.0 5.0 MEDIUM AV:N/AC:L/Au:N/C:N/I:P/A:N

vendor_cisco 5.8 MEDIUM

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CWE-400