Instituto Nacional de ciberseguridad. Sección Incibe
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CVE-2020-3231

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
03/06/2020
Last modified:
08/06/2020

Description

A vulnerability in the 802.1X feature of Cisco Catalyst 2960-L Series Switches and Cisco Catalyst CDB-8P Switches could allow an unauthenticated, adjacent attacker to forward broadcast traffic before being authenticated on the port. The vulnerability exists because broadcast traffic that is received on the 802.1X-enabled port is mishandled. An attacker could exploit this vulnerability by sending broadcast traffic on the port before being authenticated. A successful exploit could allow the attacker to send and receive broadcast traffic on the 802.1X-enabled port before authentication.

Impact

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

Base Score: 4.70 MEDIUM
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N

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

Base Score 3.x
4.70
Severity 3.x
MEDIUM
Vector 2.0
AV:A/AC:M/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 2.90 LOW
Vector: AV:A/AC:M/Au:N/C:P/I:N/A:N

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

Base Score 2.0
2.90
Severity 2.0
LOW

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:ios:15.2\(5\)e2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(5\)ex:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(5a\)e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(5b\)e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(5c\)e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(6\)e:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(6\)e0c:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(6\)e1:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(6\)e1a:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(6\)e1s:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(6\)e2:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(6\)e2b:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(6\)e3:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(6\)e4:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:15.2\(7\)e:*:*:*:*:*:*:*

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


References to Advisories, Solutions, and Tools