// For flags

CVE-2019-13628

 

Severity Score

4.7
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

wolfSSL y wolfCrypt versión 4.0.0 y anteriores (cuando se configuran sin --enable-fpecc, --enable-sp o --enable-sp-math) contienen un canal lateral de temporización en la generación de firmas ECDSA. Esto permite a un atacante local, capaz de medir con precisión la duración de las operaciones de firma, inferir información acerca del nonces utilizado y potencialmente montar un ataque de red para recuperar la clave privada usada. El problema se presenta porque la multiplicación escalar del archivo ecc.c podría perder la longitud de bits.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Local
Attack Complexity
High
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2019-07-17 CVE Reserved
  • 2019-10-03 CVE Published
  • 2023-03-08 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-203: Observable Discrepancy
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Wolfssl
Search vendor "Wolfssl"
Wolfssl
Search vendor "Wolfssl" for product "Wolfssl"
<= 4.0.0
Search vendor "Wolfssl" for product "Wolfssl" and version " <= 4.0.0"
-
Affected