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.

• cisco ios 15.2\(5\)e2 • cisco ios 15.2\(5\)ex • cisco ios 15.2\(5a\)e • cisco ios 15.2\(5b\)e • cisco ios 15.2\(5c\)e • cisco ios 15.2\(6\)e • cisco ios 15.2\(6\)e0c • cisco ios 15.2\(6\)e1 • cisco ios 15.2\(6\)e1a • cisco ios 15.2\(6\)e1s • cisco ios 15.2\(6\)e2 • cisco ios 15.2\(6\)e2b • cisco ios 15.2\(6\)e3 • cisco ios 15.2\(6\)e4 • cisco ios 15.2\(7\)e • cisco ios 15.2\(7\)e0a • cisco ios 15.2\(7\)e0b • cisco ios 15.2\(7\)e0s • cisco ios 15.2\(7a\)e0b • cisco ios 15.2\(7b\)e0b • cisco ios 15.3\(3\)jaa1 • cisco ios 15.3\(3\)jpj