Information Exposure Affecting mbedtls package, versions <2.16.4-r0


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.05% (22nd percentile)

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  • Snyk IDSNYK-ALPINE311-MBEDTLS-588276
  • published21 Jul 2020
  • disclosed23 Jan 2020

Introduced: 23 Jan 2020

CVE-2019-18222  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Alpine:3.11 mbedtls to version 2.16.4-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream mbedtls package and not the mbedtls package as distributed by Alpine. See How to fix? for Alpine:3.11 relevant fixed versions and status.

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.

CVSS Scores

version 3.1