CVEvulnerability

CVE-2019-18222

4.7 MEDIUM Published 2020-01-23 Modified 2026-06-17 Official page ↗
Status
Modified
Published
2020-01-23
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
4.7 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0 ([email protected])
1.9 LOW — AV:L/AC:M/Au:N/C:P/I:N/A:N
Weaknesses
CWE-203

Description

The ECDSA signature implementation in ecdsa.c in Arm Mbed Crypto 2.1 and Mbed TLS through 2.19.1 does not reduce the blinded scalar before computing the inverse, which allows a local attacker to recover the private key via side-channel attacks.

Affected configurations

• arm mbed crypto (< 3.0.0) • arm mbed tls (< 2.7.13) • arm mbed tls (>= 2.8.0 < 2.16.4) • arm mbed tls (>= 2.17.0 < 2.20.0) • fedoraproject fedora 30 • fedoraproject fedora 31 • debian debian linux 10.0

Related

Weakness · CWE (1)

  • CWE-203 Observable Discrepancy weakness

References