CVE-2020-36425
MEDIUMCVSS 5.3/10EPSS 0.91%
Last modified
CVE-2020-36425 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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. EPSS estimates a 0.91% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Arm | Mbed Tls | < 2.7.17 |
| Arm | Mbed Tls | >= 2.8.0, < 2.16.8 |
| Arm | Mbed Tls | >= 2.17.0, < 2.24.0 |
| Debian | Debian Linux | 10.0 |
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
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-36425?
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.
How severe is CVE-2020-36425?
CVE-2020-36425 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.91% probability of exploitation in the next 30 days.
How do I fix CVE-2020-36425?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2020-36425?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST