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CVE-2019-13628
Good to know:
Date: October 3, 2019
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.
Language: C
Severity Score
Related Resources (9)
Severity Score
Weakness Type (CWE)
Observable Discrepancy
CWE-203Top Fix
CVSS v3.1
Base Score: |
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Attack Vector (AV): | LOCAL |
Attack Complexity (AC): | HIGH |
Privileges Required (PR): | LOW |
User Interaction (UI): | NONE |
Scope (S): | UNCHANGED |
Confidentiality (C): | HIGH |
Integrity (I): | NONE |
Availability (A): | NONE |
CVSS v2
Base Score: |
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Access Vector (AV): | LOCAL |
Access Complexity (AC): | HIGH |
Authentication (AU): | NONE |
Confidentiality (C): | PARTIAL |
Integrity (I): | NONE |
Availability (A): | NONE |
Additional information: |