Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2020-3200

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
03/06/2020
Last modified:
10/06/2020

Description

A vulnerability in the Secure Shell (SSH) server code of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to cause an affected device to reload. The vulnerability is due to an internal state not being represented correctly in the SSH state machine, which leads to an unexpected behavior. An attacker could exploit this vulnerability by creating an SSH connection to an affected device and using a specific traffic pattern that causes an error condition within that connection. A successful exploit could allow an attacker to cause the device to reload, resulting in a denial of service (DoS) condition.

Impact

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

Base Score: 7.70 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

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

Base Score 3.x
7.70
Severity 3.x
HIGH
Vector 2.0
AV:N/AC:L/Au:S/C:N/I:N/A:C CVSS v2.0 Severity and Metrics:

Base Score: 6.80 MEDIUM
Vector: AV:N/AC:L/Au:S/C:N/I:N/A:C

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

Base Score 2.0
6.80
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:12.2\(58\)ex:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(58\)ey:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(58\)ey1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(58\)ey2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(58\)ez:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(58\)se:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(58\)se1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(58\)se2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(60\)ez:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(60\)ez1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(60\)ez2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(60\)ez3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(60\)ez4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(60\)ez5:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools