title: Multiple Cisco Products Snort Application Detection Engine Policy Bypass Vulnerability
description: Multiple Cisco products are affected by a vulnerability in the Snort application detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. The vulnerability is due to a flaw in the detection algorithm. An attacker could exploit this vulnerability by sending crafted packets that would flow through an affected system. A successful exploit could allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network.
problem types: CWE-670
affected:
{
vendor: Cisco
product: Cisco Firepower Threat Defense Software
versions:
version: n/a, status: affected
}
metrics:
cvssV3_0: [
version: 3.0
vectorString: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
attackVector: NETWORK
attackComplexity: HIGH
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: NONE
integrityImpact: LOW
availabilityImpact: NONE
baseScore: 4
baseSeverity: MEDIUM
]
exploits: The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory.