Description
Re-pairing with a legitimate device can use a lower security level than
previous making brute-forcing the LTK easier. See V4 in the BLERP paper linked below.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| silabs.com | WiseConnect | 4.0.0 – < 4.1.0, 2.0.0 – < 2.14.0 | 4.1.0 |
References
- https://docs.silabs.com/sisdk-release-notes/latest/sisdk-wifi-release-notes/sisdk-wifible-ble-release-notes release-notes
- https://docs.silabs.com/rs9116-wiseconnect/latest/wifibt-wc-release-notes/rs9116-ble-release-notes#bug-fixes release-notes
- https://community.silabs.com/068Vm00000x0yyH vendor-advisory permissions-required
- https://www.ndss-symposium.org/ndss-paper/blerp-ble-re-pairing-attacks-and-defenses/ related