Cisco IOS XE before 3.1.2S on ASR 1000 devices mishandles the automatic setup of Virtual Fragment Reassembly (VFR) by certain firewall and NAT components, which allows remote attackers to cause a denial of service (Embedded Services Processor crash) via crafted IP packets, aka Bug IDs CSCtf87624, CSCte93229, CSCtd19103, and CSCti63623.
| Software | From | Fixed in |
|---|---|---|
| cisco / ios_xe | 2.2.1 | 2.2.1.x |
| cisco / ios_xe | 2.2.2 | 2.2.2.x |
| cisco / ios_xe | 2.2.3 | 2.2.3.x |
| cisco / ios_xe | 3.1.0s | 3.1.0s.x |
| cisco / ios_xe | 3.1.1s | 3.1.1s.x |