CVE-2022-20751
Assigner: cisco
Published: 2022-04-27T00:00:00
State: PUBLISHED
affected: product: Cisco Firepower Threat Defense Software 
vendor: Cisco
versions: status: affected
version: n/a
datePublic: 2022-04-27T00:00:00
descriptions: value: A vulnerability in the Snort detection engine integration for Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause unlimited memory consumption, which could lead to a denial of service (DoS) condition on an affected device. This vulnerability is due to insufficient memory management for certain Snort events. An attacker could exploit this vulnerability by sending a series of crafted IP packets that would generate specific Snort events on an affected device. A sustained attack could cause an out of memory condition on the affected device. A successful exploit could allow the attacker to interrupt all traffic flowing through the affected device. In some circumstances, the attacker may be able to cause the device to reload, resulting in a DoS condition.
exploits: value: The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory. 
metrics: cvssV3_1: attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 8.6
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: CHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
version: 3.1
problemTypes: descriptions: cweId: CWE-770
description: CWE-770
type: CWE
source: advisory: cisco-sa-ftd-snort-dos-hd2hFgM
defect: CSCvu41615
discovery: INTERNAL
title: Cisco Firepower Threat Defense Software Snort Out of Memory Denial of Service Vulnerability