Improper Certificate Validation Affecting mbedtls package, versions <2.16.9-0.1


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
0.23% (62nd percentile)

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  • Snyk IDSNYK-DEBIAN12-MBEDTLS-1553542
  • published23 Jul 2021
  • disclosed19 Jul 2021

Introduced: 19 Jul 2021

CVE-2020-36425  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade Debian:12 mbedtls to version 2.16.9-0.1 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 Debian. See How to fix? for Debian:12 relevant fixed versions and status.

An issue was discovered in Arm Mbed TLS before 2.24.0. It incorrectly uses a revocationDate check when deciding whether to honor certificate revocation via a CRL. In some situations, an attacker can exploit this by changing the local clock.

CVSS Scores

version 3.1