CVE-2021-40114

Severity CVSS v4.0:

Pending analysis

Type:

Unavailable / Other

Publication date:

27/10/2021

Last modified:

26/11/2024

Description

Multiple Cisco products are affected by a vulnerability in the way the Snort detection engine processes ICMP traffic that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper memory resource management while the Snort detection engine is processing ICMP packets. An attacker could exploit this vulnerability by sending a series of ICMP packets through an affected device. A successful exploit could allow the attacker to exhaust resources on the affected device, causing the device to reload.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

6.80

Severity 3.x

MEDIUM

Vector 2.0

AV:N/AC:L/Au:N/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.80 HIGH
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): None
Integrity (I): None
Availability (A): Complete

Base Score 2.0

7.80

Severity 2.0

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:cisco:firepower_threat_defense::::::::		6.4.0.12 (excluding)
cpe:2.3:a:cisco:firepower_threat_defense::::::::	6.5.0 (including)	6.6.3 (excluding)
cpe:2.3:a:cisco:firepower_threat_defense::::::::	6.7.0 (including)	6.7.0.2 (excluding)
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.14.0:::::::*
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.15:::::::*
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.16:::::::*
cpe:2.3:a:cisco:secure_firewall_management_center:2.9.17:::::::*
cpe:2.3:a:cisco:unified_threat_defense::::::::	16.12 (including)	16.12.6 (excluding)
cpe:2.3:a:cisco:unified_threat_defense::::::::	17.3 (including)	17.3.4a (excluding)
cpe:2.3:a:cisco:unified_threat_defense::::::::	17.4 (including)	17.4.2 (excluding)
cpe:2.3:a:snort:snort::::::::	2.0.0 (including)	2.9.18 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2021-40114

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools