Vulnerability Monitor

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CVE-2019-18222

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.

Published

2020-01-23T17:15:11.893

Last Modified

2024-11-21T04:32:52.030

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 4.7 (MEDIUM)

CVSSv2 Vector

AV:L/AC:M/Au:N/C:P/I:N/A:N

  • Access Vector: LOCAL
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: NONE
  • Availability Impact: NONE
Exploitability Score

3.4

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-203
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application arm mbed_crypto < 3.0.0 Yes
Application arm mbed_tls < 2.7.13 Yes
Application arm mbed_tls < 2.16.4 Yes
Application arm mbed_tls < 2.20.0 Yes
Operating System fedoraproject fedora 30 Yes
Operating System fedoraproject fedora 31 Yes
Operating System debian debian_linux 10.0 Yes
References