Cisco IOS 15.2(04)M and 15.4(03)M lets physical-interface ACLs supersede virtual PPP interface ACLs, which allows remote authenticated users to bypass intended network-traffic restrictions in opportunistic circumstances by using PPP, aka Bug ID CSCur61303.
| Software | From | Fixed in |
|---|---|---|
| cisco / ios | 15.2(4)m | 15.2(4)m.x |
| cisco / ios | 15.4(3)m | 15.4(3)m.x |