Observable Timing Discrepancy Affecting mbedtls package, versions [,2.28.8)[3.0.0,3.5.2)


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

EPSS
0.18% (40th percentile)

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  • Snyk IDSNYK-CONAN-MBEDTLS-10077659
  • published8 May 2025
  • disclosed31 Jan 2024
  • creditHubert Kario

Introduced: 31 Jan 2024

CVE-2024-23170  (opens in a new tab)
CWE-203  (opens in a new tab)

How to fix?

Upgrade mbedtls to version 2.28.8, 3.5.2 or higher.

Overview

Affected versions of this package are vulnerable to Observable Timing Discrepancy during in RSA private operations. An attacker can recover the plaintext by sending a large number of messages for decryption, as described in the "Everlasting ROBOT: the Marvin Attack" by Hubert Kario.

CVSS Base Scores

version 3.1