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CVE-2019-13628

nvd nist
Published: Oct 3, 2019Modified: Jun 17, 2026

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4.7
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Exploitability: 1.0 / Impact: 3.6
Source: 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.

Affected (1)

Products: Wolfssl: Wolfssl
Wolfssl
1 product
Wolfssl
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Wolfssl
Up to 4.0.0

Related CWEs

CWE-203
Observable Discrepancy
The product behaves differently or sends different responses under different circumstances in a way that is observable to an unauthorized actor, which exposes security-relevant information about the state of the product, such as whether a particular operation was successful or not.

References (8)

Source: cve@mitre.org
Mailing ListThird Party Advisory
Source: cve@mitre.org
Technical DescriptionThird Party Advisory
Source: cve@mitre.org
Product
Source: cve@mitre.org
Technical DescriptionThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing ListThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Technical DescriptionThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Product
Source: af854a3a-2127-422b-91ae-364da2661108
Technical DescriptionThird Party Advisory

Timeline

No history available yet.