cloudflare/circl · Security
CIRCL's Kyber: timing side-channel (kyberslash2)
- GHSA ID
- GHSA-9763-4f94-gfch
- Severity
- high
- Published
- Updated
Description
Impact
On some platforms, when an attacker can time decapsulation of Kyber on forged cipher texts, they could possibly learn (parts of) the secret key.
Does not apply to ephemeral usage, such as when used in the regular way in TLS.
Patches
Patched in 1.3.7.