Description (CNA)
Adversary-induced keystream re-use on TETRA air-interface encrypted traffic using any TEA keystream generator. IV generation is based upon several TDMA frame counters, which are frequently broadcast by the infrastructure in an unauthenticated manner. An active adversary can manipulate the view of these counters in a mobile station, provoking keystream re-use. By sending crafted messages to the MS and analyzing MS responses, keystream for arbitrary frames can be recovered.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| ETSI / TETRA Standard | affected all |
CWE
CWE-323
References
ADP enrichment
No English description supplied.