Vulnerability Details : CVE-2020-3231
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.
Vulnerability category: BypassGain privilege
Products affected by CVE-2020-3231
- cpe:2.3:o:cisco:ios:15.2\(5\)e2:*:*:*:*:*:*:*
- 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\(5\)ex:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(6\)e:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(7\)e:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(6\)e1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(6\)e0c:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(6\)e1s:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(6\)e1a:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.3\(3\)jaa1:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(6\)e2b:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(6\)e2:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(6\)e3:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(7\)e0b:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(7a\)e0b:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(7b\)e0b:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(7\)e0s:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(7\)e0a:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.3\(3\)jpj:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios:15.2\(6\)e4:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-3231
0.06%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 23 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-3231
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.9
|
LOW | AV:A/AC:M/Au:N/C:P/I:N/A:N |
5.5
|
2.9
|
NIST | |
|
4.7
|
MEDIUM | CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N |
2.8
|
1.4
|
Cisco Systems, Inc. | |
|
4.7
|
MEDIUM | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N |
2.8
|
1.4
|
NIST |
CWE ids for CVE-2020-3231
-
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.Assigned by: ykramarz@cisco.com (Secondary)
-
The product performs an authorization check when an actor attempts to access a resource or perform an action, but it does not correctly perform the check.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-3231
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-c2960L-DpWA9Re4
Cisco IOS Software for Catalyst 2960-L Series Switches and Catalyst CDB-8P Switches 802.1X Authentication Bypass VulnerabilityPatch;Vendor Advisory
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