CVE-2019-13629

MediumCVSS 5.9/10Last modified Jun 17, 2026

Description

MatrixSSL 4.2.1 and earlier contains a timing side channel in ECDSA signature generation. This allows a local or a remote attacker, able to measure the duration of hundreds to thousands of signing operations, to compute the private key used. The issue occurs because crypto/pubkey/ecc_math.c scalar multiplication leaks the bit length of the scalar.

Metrics

CVSS 3.1 5.9/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weakness enumeration

CWE-203CWE-327

Affected software

No affected versions have been published.

Timeline

Published
Oct 3, 2019
Last modified
Jun 17, 2026
NVD status
Modified

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CVE-2019-13629: Medium severity, CVSS 5.9 | Vulnix