VulnerabilityModified
CVE-2020-36422
A side channel allows recovery of an ECC private key, related to mbedtls_ecp_check_pub_priv, mbedtls_pk_parse_key, mbedtls_pk_parse_keyfile, mbedtls_ecp_mul, and mbedtls_ecp_mul_restartable.
MEDIUM 5.3EPSS 1.26%
Does this matter?
Lower severity and a low EPSS score (1.26%). Track it; it rarely justifies an emergency change on its own.
Description
An issue was discovered in Arm Mbed TLS before 2.23.0. A side channel allows recovery of an ECC private key, related to mbedtls_ecp_check_pub_priv, mbedtls_pk_parse_key, mbedtls_pk_parse_keyfile, mbedtls_ecp_mul, and mbedtls_ecp_mul_restartable.
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 1.26% probability · 68th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-203
- Affected
- arm/mbed tls · debian/debian linux
- Source
- cve@mitre.org
References
- https://bugs.gentoo.org/730752Issue Tracking, Patch, Third Party Advisory
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7Release Notes, Third Party Advisory
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0Release Notes, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/12/msg00036.htmlMailing List, Third Party Advisory
- https://bugs.gentoo.org/730752Issue Tracking, Patch, Third Party Advisory
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.16.7Release Notes, Third Party Advisory
- https://github.com/ARMmbed/mbedtls/releases/tag/v2.23.0Release 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.