Vulnerability Description
An issue was discovered in Arm Mbed TLS before 2.23.0. Because of a side channel in modular exponentiation, an RSA private key used in a secure enclave could be disclosed.
CVSS Score
5.3
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Arm | Mbed Tls | < 2.16.7 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://bugs.gentoo.org/730752Issue TrackingPatchThird Party Advisory
- https://github.com/ARMmbed/mbedtls/issues/3394ExploitIssue TrackingThird Party Advisory
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7Release NotesThird Party Advisory
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0Release NotesThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing ListThird Party Advisory
- https://bugs.gentoo.org/730752Issue TrackingPatchThird Party Advisory
- https://github.com/ARMmbed/mbedtls/issues/3394ExploitIssue TrackingThird Party Advisory
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7Release NotesThird Party Advisory
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0Release NotesThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing ListThird Party Advisory
FAQ
What is CVE-2020-36421?
CVE-2020-36421 is a vulnerability with a CVSS score of 5.3 (MEDIUM). An issue was discovered in Arm Mbed TLS before 2.23.0. Because of a side channel in modular exponentiation, an RSA private key used in a secure enclave could be disclosed.
How severe is CVE-2020-36421?
CVE-2020-36421 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-36421?
Check the references section above for vendor advisories and patch information. Affected products include: Arm Mbed Tls, Debian Debian Linux.