NULL pointer exception in the Modbus dissector in Wireshark 3.4.0 to 3.4.9 and 3.2.0 to 3.2.17 allows denial of service via packet injection or crafted capture file
The product dereferences a pointer that it expects to be valid but is NULL.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Wireshark | Wireshark | 3.2.0 (including) | 3.2.17 (including) |
| Wireshark | Wireshark | 3.4.0 (including) | 3.4.9 (including) |
| Wireshark | Ubuntu | bionic | * |
| Wireshark | Ubuntu | focal | * |
| Wireshark | Ubuntu | hirsute | * |
| Wireshark | Ubuntu | impish | * |
| Wireshark | Ubuntu | kinetic | * |
| Wireshark | Ubuntu | lunar | * |
| Wireshark | Ubuntu | mantic | * |
| Wireshark | Ubuntu | oracular | * |
| Wireshark | Ubuntu | trusty | * |
| Wireshark | Ubuntu | trusty/esm | * |
| Wireshark | Ubuntu | upstream | * |
| Wireshark | Ubuntu | xenial | * |