Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2020-3230

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
03/06/2020
Last modified:
17/09/2021

Description

A vulnerability in the Internet Key Exchange Version 2 (IKEv2) implementation in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to prevent IKEv2 from establishing new security associations. The vulnerability is due to incorrect handling of crafted IKEv2 SA-Init packets. An attacker could exploit this vulnerability by sending crafted IKEv2 SA-Init packets to the affected device. An exploit could allow the attacker to cause the affected device to reach the maximum incoming negotiation limits and prevent further IKEv2 security associations from being formed.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:N/C:N/I:N/A:P CVSS v2.0 Severity and Metrics:

Base Score: 5.00 MEDIUM
Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

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

Base Score 2.0
5.00
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ios:12.2\(6\)i1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ej:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ej1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ek:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ek1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ex:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ex1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ex2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ex3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ex4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ex5:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ex6:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ex7:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ex8:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.0\(2\)ey:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools