Description (CNA)
PyQuorum is a cryptographic library for secret sharing and key management. Prior to 0.2.1, the mul_mod function implements multiplication via a binary expansion loop whose execution time depends on the Hamming weight of the second operand (the exponent). An attacker who can measure the time of secret‑sharing operations (e.g., via a remote service) could progressively recover the values of shares, ultimately leading to secret reconstruction. This vulnerability is fixed in 0.2.1.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| svvqt / pyquorum | affected < 0.2.1 |
CWE
CWE-208
References
ADP enrichment
No English description supplied.
No references supplied.