A vulnerability in the 802.1x multiple-authentication (multi-auth) feature of Cisco IOS Software could allow an unauthenticated, adjacent attacker to bypass the authentication phase on an 802.1x multi-auth port. The vulnerability is due to a logic change error introduced into the code. An attacker could exploit this vulnerability by trying to access an 802.1x multi-auth port after a successful supplicant has authenticated. An exploit could allow the attacker to bypass the 802.1x access controls and obtain access to the network. Cisco Bug IDs: CSCvg69701.
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ios | Cisco | 15.4(3)m6 (including) | 15.4(3)m6 (including) |
| Ios | Cisco | 15.4(3)m6a (including) | 15.4(3)m6a (including) |
| Ios | Cisco | 15.4(3)m7 (including) | 15.4(3)m7 (including) |
| Ios | Cisco | 15.4(3)m7a (including) | 15.4(3)m7a (including) |
| Ios | Cisco | 15.4(3)m8 (including) | 15.4(3)m8 (including) |
| Ios | Cisco | 15.4(3.0i)m6 (including) | 15.4(3.0i)m6 (including) |
| Ios | Cisco | 15.5(3)m3 (including) | 15.5(3)m3 (including) |
| Ios | Cisco | 15.5(3)m4 (including) | 15.5(3)m4 (including) |
| Ios | Cisco | 15.5(3)m4a (including) | 15.5(3)m4a (including) |
| Ios | Cisco | 15.5(3)m4b (including) | 15.5(3)m4b (including) |
| Ios | Cisco | 15.5(3)m4c (including) | 15.5(3)m4c (including) |
| Ios | Cisco | 15.5(3)m5 (including) | 15.5(3)m5 (including) |
| Ios | Cisco | 15.5(3)m5a (including) | 15.5(3)m5a (including) |
| Ios | Cisco | 15.5(3)m6 (including) | 15.5(3)m6 (including) |
| Ios | Cisco | 15.5(3)m6a (including) | 15.5(3)m6a (including) |
| Ios | Cisco | 15.6(1)t2 (including) | 15.6(1)t2 (including) |
| Ios | Cisco | 15.6(1)t3 (including) | 15.6(1)t3 (including) |
| Ios | Cisco | 15.6(2)t1 (including) | 15.6(2)t1 (including) |
| Ios | Cisco | 15.6(2)t2 (including) | 15.6(2)t2 (including) |
| Ios | Cisco | 15.6(2)t3 (including) | 15.6(2)t3 (including) |
| Ios | Cisco | 15.6(3)m (including) | 15.6(3)m (including) |
| Ios | Cisco | 15.6(3)m0a (including) | 15.6(3)m0a (including) |
| Ios | Cisco | 15.6(3)m1 (including) | 15.6(3)m1 (including) |
| Ios | Cisco | 15.6(3)m1a (including) | 15.6(3)m1a (including) |
| Ios | Cisco | 15.6(3)m1b (including) | 15.6(3)m1b (including) |
| Ios | Cisco | 15.6(3)m2 (including) | 15.6(3)m2 (including) |
| Ios | Cisco | 15.6(3)m2a (including) | 15.6(3)m2a (including) |
| Ios | Cisco | 15.6(3)m3 (including) | 15.6(3)m3 (including) |
| Ios | Cisco | 15.6(3)m3a (including) | 15.6(3)m3a (including) |
| Ios | Cisco | 15.7(3)m (including) | 15.7(3)m (including) |
| Ios | Cisco | 15.7(3)m0a (including) | 15.7(3)m0a (including) |
| Ios | Cisco | 15.7(3)m1 (including) | 15.7(3)m1 (including) |
| Ios | Cisco | 15.7(3)m2 (including) | 15.7(3)m2 (including) |