Description
SMP security request (from peripheral) does not include the maximum encryption key size supported. Using a key with less than the maximum keysize makes brute-forcing the key easier. See V6 in BLERP paper linked below.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
silabs.com WiseConnect
Default version status: unaffected
4.0.0 to < 4.1.0affected2.0.0 to < 2.14.0affected
References
- https://docs.silabs.com/sisdk-release-notes/latest/sisdk-wifi-release-notes/sisdk-wifible-ble-release-notes ↗
- https://docs.silabs.com/rs9116-wiseconnect/latest/wifibt-wc-release-notes/rs9116-ble-release-notes#bug-fixes ↗
- https://community.silabs.com/068Vm00000x0yyH ↗
- https://www.ndss-symposium.org/ndss-paper/blerp-ble-re-pairing-attacks-and-defenses/ ↗