Kurz gesagt
- CVE-2019-13628 ist eine Schwachstelle (MITTEL (CVSS 4.7)) in wolfcrypt, wolfssl (wolfssl).
- Wahrscheinlichkeit einer Ausnutzung in den nächsten 30 Tagen (EPSS): 0.38%, höher als bei 32.0% aller Schwachstellen.
- Abhilfe: auf 4.1.0 oder neuer aktualisieren.
| Package | Affected versions | Patched versions |
|---|
| wolfcrypt PyPI | < 4.1.0
| 4.1.0
|
| wolfssl | ≤ 4.0.0
| No fix yet |
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.
NVD 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.
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