User Enumeration Affecting armmbed/mbed-crypto package, versions [,3.0.0)


Severity

Recommended
0.0
medium
0
10

CVSS assessment made by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.05% (23rd percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-UNMANAGED-ARMMBEDMBEDCRYPTO-2366033
  • published26 Jan 2022
  • disclosed23 Jan 2020
  • creditUnknown

Introduced: 23 Jan 2020

CVE-2019-18222  (opens in a new tab)
CWE-203  (opens in a new tab)

How to fix?

Upgrade armmbed/mbed-crypto to version 3.0.0 or higher.

Overview

Affected versions of this package are vulnerable to User Enumeration. 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.

References

CVSS Scores

version 3.1