CVEs-PoC/2019/CVE-2019-13628.md

CVE-2019-13628

Description

wolfSSL and wolfCrypt 4.0.0 and earlier (when configured without --enable-fpecc, --enable-sp, or --enable-sp-math) contain a timing side channel in ECDSA signature generation. This allows a local attacker, able to precisely measure the duration of signature operations, to infer information about the nonces used and potentially mount a lattice attack to recover the private key used. The issue occurs because ecc.c scalar multiplication might leak the bit length.

POC

Reference

• https://minerva.crocs.fi.muni.cz/
• https://tches.iacr.org/index.php/TCHES/article/view/7337

Github

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