Information Exposure Affecting mbedtls package, versions <2.16.4-r0


Severity

Recommended
0.0
medium
0
10

Snyk's Security Team recommends NVD's CVSS assessment

    Threat Intelligence

    EPSS
    0.05% (21st percentile)

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  • Snyk ID SNYK-ALPINE320-MBEDTLS-7010195
  • published 23 May 2024
  • disclosed 23 Jan 2020

How to fix?

Upgrade Alpine:3.20 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:3.20 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
Expand this section

NVD

Recommended
4.7 medium
  • Attack Vector (AV)
    Local
  • Attack Complexity (AC)
    High
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    None
  • Availability (A)
    None