Improper Certificate Validation Affecting mbedtls package, versions <2.16.9-0.1
Threat Intelligence
EPSS
0.43% (75th
percentile)
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Test your applications- Snyk ID SNYK-DEBIAN11-MBEDTLS-1325368
- published 23 Jul 2021
- disclosed 19 Jul 2021
Introduced: 19 Jul 2021
CVE-2020-36425 Open this link in a new tabHow to fix?
Upgrade Debian:11 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:11 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.
References
- https://security-tracker.debian.org/tracker/CVE-2020-36425
- https://bugs.gentoo.org/740108
- https://github.com/ARMmbed/mbedtls/issues/3340
- https://github.com/ARMmbed/mbedtls/pull/3433
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.html
CVSS Scores
version 3.1