VulnerabilityModified

CVE-2020-36425

In some situations, an attacker can exploit this by changing the local clock.

MEDIUM 5.3EPSS 0.91%

Does this matter?

Lower severity and a low EPSS score (0.91%). Track it; it rarely justifies an emergency change on its own.

Description

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 3.1: 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS: 0.91% probability · 58th percentile
CISA KEV: Not listed
Weakness: CWE-295
Affected: arm/mbed tls · debian/debian linux
Source: cve@mitre.org

References

https://bugs.gentoo.org/740108Issue Tracking, Patch, Third Party Advisory
https://github.com/ARMmbed/mbedtls/issues/3340Exploit, Issue Tracking, Third Party Advisory
https://github.com/ARMmbed/mbedtls/pull/3433Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8Release Notes, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0Release Notes, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17Release Notes, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing List, Third Party Advisory
https://bugs.gentoo.org/740108Issue Tracking, Patch, Third Party Advisory
https://github.com/ARMmbed/mbedtls/issues/3340Exploit, Issue Tracking, Third Party Advisory
https://github.com/ARMmbed/mbedtls/pull/3433Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.8Release Notes, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.24.0Release Notes, Third Party Advisory
https://github.com/ARMmbed/mbedtls/releases/tag/v2.7.17Release Notes, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing List, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.