Improper Certificate Validation Affecting armmbed/mbedtls package, versions [,2.7.18)[2.8.0,2.16.9)[2.17.0,2.25.0)


Severity

Recommended
0.0
high
0
10

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

Threat Intelligence

EPSS
0.23% (62nd percentile)

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  • Snyk IDSNYK-UNMANAGED-ARMMBEDMBEDTLS-2368685
  • published26 Jan 2022
  • disclosed23 Aug 2021
  • creditUnknown

Introduced: 23 Aug 2021

CVE-2020-36478  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade armmbed/mbedtls to version 2.7.18, 2.16.9, 2.25.0 or higher.

Overview

Affected versions of this package are vulnerable to Improper Certificate Validation. An issue was discovered in Mbed TLS before 2.25.0 (and before 2.16.9 LTS and before 2.7.18 LTS). A NULL algorithm parameters entry looks identical to an array of REAL (size zero) and thus the certificate is considered valid. However, if the parameters do not match in any way, then the certificate should be considered invalid.

CVSS Scores

version 3.1